Great place for a couple! My husband and I really enjoyed staying here for 3 nights.
Pros: centrally located (right near arc de triumph and easy to walk to Plaza Catalunya and the born), great neighborhood with cute cafes and convenient amenities, lovely well-lit space with small rooftop patio, nice kitchen, working elevator (though you still have to climb one flight of stairs). Also, option check in much earlier than most Airbnb’s.
Cons: As others have noted, check in not smooth. Had to wait on the street for one hour with our luggage before someone came to meet us. We had an email confirmation for a certain time, and when no one showed up I called the office. The person was very polite but said our check in was 45 minutes later than we had in writing. At least the agent who checked us in was very nice, once she actually got there. The place can get a bit drafty in winter, but I imagine many buildings in Barcelona have the same issue.