We stayed in Boom's Cafe for four nights during Fullmoon Party time in a Fan Bungalow (400 B per night) right on the beach and we had a really good time.
Nok the owner is very lovely and speaks Thai, English and German very well. She has 6 very cute dogs that run around the place all the time and behave well (f.ex. they do not go onto or into the bungalows!). If you need a taxi or have other wishes just ask her, she is going to help you for sure!
There is a small restaurant with a "book-change-area", where you can also have free WIFI. We ate there all the time - Nok is cooking for you, whenever you're hungry! She is a very good cook. Also try the coconut and banana milkshake :)
Our fan bungalow - right on the beach - was very clean with a big bathroom (you also get bedsheets and toilet paper) and had a hammock.
The beach is beautiful and there are only the few guests from Boom's Cafe staying there! It's a very quiet place - near but far enough away from loud Haad Rin, with the best sunsets we saw on our whole trip. Unfortunately the sea is very flat (you cannot swim there) - but that's normal for the southcoast of Koh Phangan.
To Fullmoon Party we walked down the beach to Haad Rin. It's about a 45 Min walk - very rocky. Back we took a taxi (100 B per person) and it took only 10 Min.
So if you are going to Koh Phangan, stay at this beautiful place, relax and enjoy the silence!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.