I think they've done a good job with this show. They've tried to make it authentic to a high degree, while they at the same time try to make it a bit dramatic. I've lived many years in Thailand and I can see that the people who made it know Thailand well (as opposed to for example "Hangover - Part 2").
It's not a perfect show, but reality is not perfect either. Some of the characters are really annoying and you just want to slap them. Sometimes the co-incidents are TOO coincidental, but it's acceptable. The English skills of the Thai actors is better than what you can expect, but I guess that makes it easier for people to watch, though, leally not as charming (that was supposed to say "really")
The main reason I liked this show is the character "Glenn". His naivety and bottomless good- will cracks me up time after time. The actor really makes me believe in the character. I'm not sure if I'd watch show if it wasn't for him. But that's another thing about it... there's something in it for "everybody". For example, kids and teenagers might be more into the teenage romance part of the show.
One of the more annoying this is the mother of two girls. She's had a stroke and should be resting, but instead she keeps fighting for her bungalow resort and she never listens to the people around her who advise her to relax. I know exactly how this feels like, to never give up. But it's really annoying to watch someone who never learns or listens.
I also like the portrait of the Thai family life and culture.
I think the acting is decent in this show. They're not over-acting like so many other Scandinavian TV shows and movies.
Overall, one of the best fictional TV productions I've seen made by Scandinavians (Swedes). I'm Norwegian.
