Me and my wife had a great time in Barcelona. The place was cozy, clean and in a really good location in the city centre. The bed was comfy too. Although sometimes it can be a bit noisy outside the apartment at night (loud people or cars driving by), but there were two pairs of earplugs on the bed when we arrived in case we would need it.
Kelly himself was a great host. He was always quick to reply to our messages, he gave us some tips about the city and was generally very helpful.