Chiangmai has many bars catering to all kinds of tastes and desires, from quiet to loud. If you seek a drink and other entertainment here are a few places you can explore. Its best experienced than read about. There are also gay friendly bars and restaurants which are safe. Most bars that have bar girls are around Thapae gate.
For bars that you want to have a good drink in are around Nimmanhaemin and a few gay places in Sirimankalajarn road.
Bars near Thapae gate:
Number 1 Pub
Loikroh Rd., Soi 1, Muang, Chiang Mai 50100 Thailand
Foxy lady a gogo bar
Thapae Rd Soi 1, Night Bazaar, Chiang Mai, 50100
Loi kroh soi 1
Zoe in Yellow corner bar and nightclub
Rajvithi Road, Chiang Mai, 50200