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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999079 - Disclosure - STOCK-BASED COMPENSATION PLANS (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999080 - Disclosure - RELATED PARTY TRANSACTIONS (Details Narrative)</link:definition>
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          <link:definition>999082 - Disclosure - SCHEDULE OF ASSETS HELD FOR SALE (Details)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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    <element id="INTG_MortgageNotesPayableRealEstate" name="MortgageNotesPayableRealEstate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_HotelOperatingExpenses" name="HotelOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_RealEstateOperatingExpenses" name="RealEstateOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_EarningsPerShareBasicAndDilutedAttributableToParentAbstract" name="EarningsPerShareBasicAndDilutedAttributableToParentAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InvestmentInSubsidiariesOne" name="InvestmentInSubsidiariesOne" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_AmortizationOfOtherNotesPayable" name="AmortizationOfOtherNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesHotel" name="IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesHotel" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IncreaseDecreaseInObligationsForSecuritiesSold" name="IncreaseDecreaseInObligationsForSecuritiesSold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IssuanceCostsFromHotelRefinance" name="IssuanceCostsFromHotelRefinance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_PaymentsOfPayoffMortgageIndebtness" name="PaymentsOfPayoffMortgageIndebtness" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_RestrictedCashIncludedInAssetsHeldForSale" name="RestrictedCashIncludedInAssetsHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_Rule10B51ArrModifiedFlag" name="Rule10B51ArrModifiedFlag" nillable="true" xbrli:periodType="duration" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_NonRule10B51ArrModifiedFlag" name="NonRule10B51ArrModifiedFlag" nillable="true" xbrli:periodType="duration" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DisclosureInvestmentInHotelNetAbstract" name="DisclosureInvestmentInHotelNetAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InvestmentDisclosureTextBlock" name="InvestmentDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DisclosureOtherFinancingTransactionsAbstract" name="DisclosureOtherFinancingTransactionsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_OtherFinancingTransactionsTextBlock" name="OtherFinancingTransactionsTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DisclosureManagementAgreementsAbstract" name="DisclosureManagementAgreementsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ManagementAgreementsTextBlock" name="ManagementAgreementsTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InvestmentInHotelNetPolicyTextBlock" name="InvestmentInHotelNetPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_OtherAssetsNetPolicyTextBlock" name="OtherAssetsNetPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DueToSecuritiesBrokerPolicyTextBlock" name="DueToSecuritiesBrokerPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ObligationsForSecuritiesSoldPolicyTextBlock" name="ObligationsForSecuritiesSoldPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_AccountsPayableAndOtherLiabilitiesPolicyTextBlock" name="AccountsPayableAndOtherLiabilitiesPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_TreasuryStockPolicyTextBlock" name="TreasuryStockPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_AssetsHeldForSalePolicyTextBlock" name="AssetsHeldForSalePolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InterestRateCapPolicyTextBlock" name="InterestRateCapPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ScheduleOfInvestmentInHotelTableTextBlock" name="ScheduleOfInvestmentInHotelTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_SummaryOfOtherNotesPayableTableTextBlock" name="SummaryOfOtherNotesPayableTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IncomeTaxesPaidTableTextBlock" name="IncomeTaxesPaidTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ScheduleOfIncomeTaxCarryforwardTableTextBlock" name="ScheduleOfIncomeTaxCarryforwardTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ImpairmentOfInvestment" name="ImpairmentOfInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_SeniorMortgageLoan" name="SeniorMortgageLoan" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_MezzanineLoan" name="MezzanineLoan" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InvestmentAbstract" name="InvestmentAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InvestmentTable" name="InvestmentTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="INTG_InvestmentLineItem" name="InvestmentLineItem" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_RealEstateInvestmentLandHeldForDevelopment" name="RealEstateInvestmentLandHeldForDevelopment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_EquityMethodSecurityOwnershipPercentage" name="EquityMethodSecurityOwnershipPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_InterestRateCap" name="InterestRateCap" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour" name="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_KeyMoneyIncentiveAdvanceToRelatedParty" name="KeyMoneyIncentiveAdvanceToRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_NumberOfHotelRooms" name="NumberOfHotelRooms" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DebtInstrumentMaturityDateRangeStartTwo" name="DebtInstrumentMaturityDateRangeStartTwo" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DebtInstrumentMaturityDateRangeEndTwo" name="DebtInstrumentMaturityDateRangeEndTwo" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_MortgageNotesPayableHotelGross" name="MortgageNotesPayableHotelGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_MortgageNotesPayableRealEstateGross" name="MortgageNotesPayableRealEstateGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredForbearanceFee" name="DeferredForbearanceFee" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_EarningsBeforeInterestTaxDepreciationAndAmortization" name="EarningsBeforeInterestTaxDepreciationAndAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IncentiveFeesWaived" name="IncentiveFeesWaived" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="INTG_IncomeTaxReconciliationDeductionDividends" name="IncomeTaxReconciliationDeductionDividends" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_IncomeTaxReconciliationOtherPermItems" name="IncomeTaxReconciliationOtherPermItems" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ProvisionToReturnAdjustment" name="ProvisionToReturnAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_PayableTrueUp" name="PayableTrueUp" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_StateRateChangeImpact" name="StateRateChangeImpact" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxAssetsGainsOnRealEstateSaleAndDepreciation" name="DeferredTaxAssetsGainsOnRealEstateSaleAndDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxAssetsIntercompanyInterest" name="DeferredTaxAssetsIntercompanyInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxAssetAfterValuationAllowance" name="DeferredTaxAssetAfterValuationAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxLiabilitiesDeferredGainsOnRealEstateSaleAndDepreciation" name="DeferredTaxLiabilitiesDeferredGainsOnRealEstateSaleAndDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxLiabilitiesIntercompanyInterest" name="DeferredTaxLiabilitiesIntercompanyInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxLiabilitiesStateTaxDeferredIncome" name="DeferredTaxLiabilitiesStateTaxDeferredIncome" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxLiabilitiesAssetsNet" name="DeferredTaxLiabilitiesAssetsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxAssetsOperatingLossCarryforwardsState" name="DeferredTaxAssetsOperatingLossCarryforwardsState" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_OperatingLossCarryforward" name="OperatingLossCarryforward" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_EffectiveFutureIncomeTaxRateSettlement" name="EffectiveFutureIncomeTaxRateSettlement" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_DeferredTaxAssetsCapitalLossCarryforwardsStateAndLocal" name="DeferredTaxAssetsCapitalLossCarryforwardsStateAndLocal" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageExercisePrice" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExchangedInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExchangedInPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExchangedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExchangedInPeriodWeightedAverageExercisePrice" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsExpired" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsExpired" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="INTG_ServiceFees" name="ServiceFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
