Maybe not all the hotels, but certainly a very good selection that can be easily booked online.  There's over 170 to choose from here, most of which have been reviewed by guests who have stayed there and also booked through the agencies Sawadee.com & Reservations24.com. You'll also see feedback on their booking service.

The prices shown are the lowest offered, so expect high season, deluxe rooms to cost quite a lot more in most cases.