Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 06, 2020
Document And Entity Information [Abstract]
Entity Registrant Name	Resource Real Estate Opportunity REIT II, Inc.
Entity Central Index Key	0001559484
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity File Number	000-55430
Entity Tax Identification Number	80-0854717
Entity Address, Address Line One	1845 Walnut Street
Entity Address, Address Line Two	17th Floor
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19103
City Area Code	215
Local Phone Number	231-7050
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding		60,206,977
Entity Incorporation, State or Country Code	MD
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false