Stayed 3 nights in one of the superior bungalows. The area is quiet, yet close to old Sukothai, and easily reachable via the bikes available to hire on site.
The bungalows were set out behind reception along a couple of side streets, which made it feel like a small housing estate. This was a bit odd and didn't really fulfil the 'garden view' billing that had been requested and promised, plus the verandah looked out onto the street almost opposite the communal breakfast room.
That said, the room itself was well-equipped, clean and with the necessary aircon for temperatures pushing 40 degrees. Bathroom was small but functional. We appreciated the complimentary water and the fridge was very useful.
Our stay included a Saturday night when the main part of the historical park is illuminated - which gives a nice atmosphere and very different to a daytime visit. A ticket lasts a calendar day, so Saturday is definitely best value given extended opening hours and the light show. Definitely get bikes to tour around - the northern zone of the park is rural and quiet, and a nice contrast to the showpiece central zone.
There is nowhere to eat on site (except for breakfast) and the options in Old Sukothai main street were a little underwhelming, but the excellent Sukothai Kitchen is 10 minutes walk away in the opposite direction. Bring a torch.
We enjoyed several hours chilling by the pool - if 'chilling' is the right term given the air was so warm and humid. There were pool towels in the bungalow.
Staff very helpful - sometimes overly so!
Overall, a great value stay.