We loved our stay at Charles' apartment in Barcelona. It is large, clean and bright. The beds were very comfortable and there is AC in the bedrooms. So we all slept well. The wifi worked great. Charles provided a Barcelona map and some very helpful touring information.
The apartment is close to a Metro station and the Metro system is very nice. But, more often, we walked to the tourist sites. It's only a short walk to La Sagrada Familia which everyone who goes to Barcelona must see. We took the Metro to the beach one day, but had a nice walk back. There is a grocery store a couple blocks away. There are many good restaurants within walking distance.

Charles is an excellent communicator - prompt and thorough. It was very easy making the necessary arrangements. Charles even booked a car to take us to the airport for our departure. Charles' apartment is very nice and we would love to stay there again if we make it back to Barcelona.