Pros: Amazing location just a street over from Khao San Road. Room was small but comfortable, perfect for someone who just needs a place to stay the night. The air conditioning worked very well. Housekeeping and the service at the front desk were both great. Everything was clean and in good condition.
Cons: The wifi was often completely unusable-- I couldn't even load Google at times. Also, because of the location, this is not a place for people who want to go to bed early. Music and noise from the nearby bars continues until 2am, so if you're not planning on going out to enjoy the nightlife, bring a pair of earplugs.
Overall, I had a great stay. I would recommend Rambuttri House to travellers who plan to spend their days exploring the city, and their nights enjoying the nightlife on Khao San Road.