We stayed at the Viang Tak on our way towards Chiang Mai.
Apart from minor things in the bathroom it was a very good hotel with friendly staff and clean rooms. Its walking distance from Taks small center and after exploring Tak, we played some snooker in the hotel, had a few drinks and overall a good time.
Breakfast buffet was decent with lots of choices.
I can definitley recommend the Viang Tak!