Traditional Massage around 270 baht per two hour session. There is ancient Thai massage at Hotel Genting, Hotel Marina and Hotel Tara. Once you enter, the supervisor will ring the bell, then the masseuses will line up sitting in a show room with their number. So, choose the girl you prefer. Then the the supervisor will show you the room. Once inside, change your cloth to a loose massage trouser. Then the girl will come bringing a bucket of water to wash your feet.
You can also call for a massage in your hotel room for an extra 30 Baht or so.
Have a hair cut, hair wash, face wash and clean your ears if you really have time to kill.