Well it is going to be my first time in Hua hin too, late november-December.
I have booked a guesthouse out of town, that was recommended by a local. It is in fact in a garden, a big bungalow with private garden and seperate bedroom. And a butler, that brings breakfast on you terace!
There is no real swimmingpool, but a prive smaller pool, guess just enough to lay down in. It looks good.
If Marc gives me authorisation, I will post a link!