The location of the this apartment is incredible if you're looking to do a touristy trip to Barcelona. Centrally located 100 feet from Plaza Catalunya, you could't ask for a better location. Both On and Off buss tours, the metro, and plenty of bus stops are mere steps from the apartment.
The place itself is impeccable. The apartment is manage by a company called You Stylish and there is always an on call representative to call if you have any questions. Arina herself is very responsive on Airbnb. The company left a "goody bag" with wine, coffee, milk and juice, as well as soap for the dishwasher. If you are planning a long stay there is both a washer and a dryer which came in handy because this was the last leg of a two week trip for us, and they provide enough detergent for four washes.
If you're looking for a convenient location in Barca, this is it.