While Ao Khai is our favorite spot it had become quite busy with famllies, mainly from Scandianavia.
Laem Mae Phim has plenty of restaurants, but most were dead. A handful were doing a decent trade. There are several places that are empty, for sale or already falling apart. Still it looks better than Mae Ram Phueng, where many ghost houses and garbage can be seen along the beach road. Doesn't look like a place where someone wants to spend their holidays.
2 or 3 nights are more than enough. There is not much to do, so life gets boring fast.
The good thing about this area is, there are hardly any Russians or Chinese, most of the visitors are Skandiavians. It is easy to find a spot on the beach, where you are alone without any hawkers bothering you.