I'd definitely recommend Chris' place if you're visiting Barcelona for a few days. The flat is very close to the tube station which has two lines, easily taking you to most of the famous spots.
The room is spacious and clean, towels are provided. There is also a radiator in case it is too cold at night.
Chris is very warm and helpful, and his cat Odri is very cute! If you enjoy staying with fluffy friends then you should pay here a visit. :)