Virginia's apartment was a great home base to explore Barcelona in. As mentioned here before, it's very central so you can walk in any direction to get to restaurants or tourist attractions or whatever. Two metro stops are pretty close (a few minutes walk) that you can easily jump on to get anywhere. The apartment is close to everything, while also being in a non touristy neighborhood. Also, the apartment is on a "real" street - ie. there are cars on it. If you want to be in the thick of the tourist neighborhoods (where there are no cars really, but people) you should look elsewhere. For us, the amount of tourists in BCN at the time meant we were happy to "leave" the super packed areas to go home.
The apartment itself is very appropriately represented in the listing. Clean, spacious, awesome AC, super fast wifi, and so on. The windows look out onto several other buildings (one of them being Gaudi) so it has an urban vibe to it. The apartment is in a real apartment building with an elevator, locking entry doors, hallways, and so on.
Virginia was super friendly and even though we were delayed getting in she met us there, showed us around, gave some tips and so on.