v3.26.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 16, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block]

None.

    
Entity Information [Line Items]      
Entity Registrant Name LIGHTSTONE VALUE PLUS REIT IV, INC.    
Entity Central Index Key 0001619312    
Entity File Number 000-55773    
Entity Tax Identification Number 46-1796830    
Entity Incorporation, State or Country Code MD    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Public Float     $ 0
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One 1985 Cedar Bridge Avenue    
Entity Address, Address Line Two Suite 1    
Entity Address, City or Town Lakewood    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 08701    
Entity Phone Fax Numbers [Line Items]      
City Area Code 732    
Local Phone Number 367-0129    
Entity Listings [Line Items]      
Entity Common Stock, Shares Outstanding   7,900,000