My wife and our 2 grown up kids just had a wonderful time in an October warm Barcelona. Phil and Fiona are very nice and were responsive whenever we needed. We got some good recommendations on where to go and how get there. We were able to walk to all the interesting places, the tube are close by, but for 4 persons a taxi is seldom more expensive. The location of the apartment is central to the city and with good breakfast and market shopping facilities nearby. I can only recommend Phil and Fiona as hosts, and the apartment.
PS. Try the recommended restaurants!