There is a small Thai food setup near the end of one of the large piers (take the left just before you reach the turnoff to the guesthouse and follow the path out onto the larger pier). They do typical noodle and rice dishes and the prices are very reasonable. No English -- not a word -- is spoken here.
On the far side of the isdland from the pier a no name restaurant has an ideal sunset setting on the water’s edge, but, as the island’s premiere karaoke haven, don’t expect too many quiet sunsets. Even when the customers all go home, the staff will happily spend their time warbling away on one of the loudest, most distorted sound systems we’ve ever encountered. Food is very cheap and despite the larger English menu is mostly restricted to noodles and rice.