First the pros, then the cons.
Pros: We chose Ruan Mai's bamboo bungalows due to its location super close to the beach and low price. Staff was friendly and Nai Yang was nice with great beaches, food and less touristy than i.e. Karon, Kata and Phuket Town.
Cons: We knew that we booked a budget hotel, but was a little surprised by its simpel interior (bed, fan, mosquitoe net and a couple of chairs on the patio) - i.e. no furniture to store your clothes and no sheet under the cover. And then bed bugs! Was bitten several times and even found a bug crawling on me. Went to the reception with the bug and after some bargaining we were moved to a different bungalow. Unfortunately, this one also had bed bugs. Unfortunately, they didn't have any other rooms available and since we were flying home the day after we decided to 'survive' another night despite the bed bugs.
Due to my experience with the bed bugs, I can't recommend the bungalows. On the other hand, Nai Yang was great.