This place is not very well known by the internet review/backpacker community, namely due to the fact that they are a simple shop, ran and owned by local Thais - and aren't on any of the major booking websites.
But that isn't to say you shouldn't be making this your first stop! Simply put, this place is a home away from home. The location is prime, situated directly in the middle of Sairee Beach - which is a prime location for this island. As the previous reviewer mentioned, it is also directly adjacent to Scuba Junction - one of the (if not THE) top rated dive shops on the island. In fact, I believe the two businesses work together to provide a limited number of discounted accommodations for customers diving with that shop.
Not that a discount is really needed, as this place is already very cheap. For 250-300BHT per night, you get your own bungalow with a fan, located right off the beach. For the traveler that has a bit more of a budget, they even have fully furnished air conditioned units, with a fridge, flat screen TV and the beach literally at your door step. You can't beat it!
Hopefully, this place will be able to get onto some of the big websites for booking online, after which it's certain to be a highly sought after place. Rumor has it, they're even building a pool and some other amenities that guests are certain to appreciate.
The owner, Noki, is very friendly and generous. There isn't much you can't ask of her that she can't get done, including booking your travel onward at a competitive price. Be sure to tell her you were sent there, as she'd love to hear it and may even toss in some freebies!