We felt very welcome and at home at Charlie's place. We can't complain at anything. Sure there was no sound barrier for our room but just use earplugs and you'll be fine. The common areas are so cozy, and so was our room. The whole place is also very clean. Charlie himself is a very warm and kind human being. If we return to SF some day we will definitely stay at Charlie's again, and we would recommend anyone to do so too.