First of all, the staff was extremely friendly and accomodating. They helped us extend our stay when we called to ask if we could check in 2 days earlier than our Expedia booking showed. They also allowed us to check out of the room late, so we could spend a little more time at a local attraction without having to pack our things.
That being said, the room was a bit disappointing. We booked a Superior room in order to get a little more space, but the room was incredibly small. The bed was stuffed into an alcove with no space on either side, and there was a narrow walkway at the foot of the bed. There was very little space to place our bags, and nowhere to place toiletries in the bathroom. Although we were supplied with 2 standard towels, 2 hand towels, and 2 washcloths, the bathroom only had 2 small hooks.
The area of the hotel is nice because it is very close to Khaosan road (tourist district), so many local shops have english-language menus and english-speaking staff. It is a little off the road so the hotel doesn't get as loud as the hotels ON Khaosan road. While it was nice for my first visit to Bangkok, if I returned I would probably stay in a less backpacker-y area of the city.
We were very pleased with the service we received and do not regret the choice to stay at Khaosan Art Hotel, however we will probably not stay there again.