I have heard that The Downtown Inn is gay friendly, and that is very close to the Night Bazaar:-
Down Town Inn – 172/1-11 Loy Kroh Rd, Anusam Night Market, Phone 053270662, Fax 053272406. Email
empcnx@samart.co.th
Comfortable hotel centrally situated in the Night Market Area
Rooms from around 800 Baht per night – including breakfast.
Then you have Seven Suns Guesthouse, which is gay managed:-
Seven Suns Guesthouse - 155 Rajamankha Rd, Phone: 05381 - 4325
Website:
http://www.sevensuns.net.
12 rooms, all recently renovated, have air- con, new wardrobes, new beds (either large or twin), fridge and television. IDD telephones in each room. Rooms from 800 Bht per night. Has restaurant and cafe downstairs.