Mai Thai Hotel

99 Haisok A. Muang
Tel  043 511038 / 511136 / 512277 / 522776-9

This hotel is famous for it’s nightlife. It has a coffee shop with karaoke on the first floor, a cocktail  parlor with girls for FULL massage on the second floor (1000 to 1500 baht) and another karaoke bar (third floor) and some snooker tables. The hotel is a little bit old, but they did renovate some bathrooms. You should pay about 500 baht or less for a room.

There is also a Coyote bar in the basement, very popular and closing at 4am:

http://www.isaan.com/forum/roiet-yasothon-khon-kaen-maha-sarakham/roiet-maithai-coyote-bar-latest-place-opened!/

And there is also a Karaoke Bar, on third floor, with sometimes ladies available:

http://www.isaan.com/en/about/other-cities-in-isaan/roi-et/bars/mai-thai-karaoke.html