INVESTMENT IN HOTEL PROPERTIES, NET - Summary of hotel properties acquisitions (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Room	Dec. 31, 2020 hotel Room	Oct. 08, 2019 hotel
Business Acquisition [Line Items]
Number of guestrooms | Room	798
Purchase  Price	$ 274,500
Number of hotels | hotel		72
Net assets acquired, excluding purchases adjustments and transaction costs	274,500
Purchase of adjacent land parcels	2,400
Purchase of net working capital assets	1,000
Capitalized transaction costs	$ 400
Hampton Inn & Suites | Silverthorne, CO
Business Acquisition [Line Items]
Number of guestrooms | Room	88
Purchase  Price	$ 25,500
Portfolio Purchase - four properties
Business Acquisition [Line Items]
Number of guestrooms | Room	710
Purchase  Price	$ 249,000
Number of hotels | hotel			4
Hotels
Business Acquisition [Line Items]
Number of guestrooms | Room		11,288
Number of hotels | hotel		72
Five hotels acquired in 2019 through joint venture | Hotels
Business Acquisition [Line Items]
Number of hotels | hotel		5
Ownership percentage of equity interests	51.00%