Choose the Acon for its price, location and parking. Like others have said the area has some interesting "nightlife" but probably not much more than other European cities.
However, we had a front facing room and it was quiet than expected. Hotel staff were very helpful and attentive, the included breakfast buffet was more than adequate. The room however could do with updating - very 1970's, helpful if on a theme weekend, not so good otherwise. TV didn't work properly - we were not in the room long enough for it to bother us.
The water however was a different story. Hot, was just about lukewarm, and warm was freezing. Showers were taken quickly, very quickly. Location wise it's pretty good, about 400m from the Ko shopping district - Prada is a cheap shop here! The old town about the same further on and has lots of resturants.
Overall for the money I paid, reasonably happy - just don't go expecting top notch rooms