The food was average and the service was alright. The prices were also average. The floor was a little shaky and you have to walk up many flights of stairs that can be rickety at some points. The music is loud and the lighting is weird. I assume this is to appeal to the "hip young crowd". I am 25 and this did not impress me. Downstairs is a shop offering clothing and other goods.
Its a shame Khun Churn does not offer it's buffet during all hours of operation because if you go there, you wont want to eat anywhere else in Chiang Mai.