We were upgraded (always a pleasant gesture) from the base level room to their mid level room, which meant that our room was split level. The bed is up some very steep stairs in a loft above the bathroom. It's all rather quaint. The design is original, with patterned stone work in the bathroom and copious Thai artworks around the room (I think I counted 12 pieces of different 'art' in total, counting the elephant carving on the wardrobe).
The room was comfortable enough and pleasant (hard bed though). We had a problem with the air con. It rattled, so on the first morning I asked for it to be fixed. The maintenance man found that the cover didn't rattle if it was pushed out from the wall a little so he got some polystyrene to use as a plug to push it out. Not quite a repair, but it worked. I had to add a little folded paper later during the week when it started rattling again. No biggy.
The hotel is at the furthest end of Chaweng beach. You can walk back along the beach to central Chaweng (say where the Ark Bar is) in about half an hour, though there is no actual beach in front of Papillon, so you need to walk in the water for 100 metres first. At low tide, this is only up to your ankles. At high tide, to your thighs. Otherwise it's a 100 Baht tuk tuk into the centre.
The food isn't great, but there is plenty elsewhere.