Very comfortable apartment. All amenities are in place, even a few capsules for the espresso machine. That is a very nice touch.
When we visited, there was a big scale construction work on the nearby street. If we were to spend entire weekdays in the apartment, that would have been not comfortable, but fortunately, that is not the activity one comes to Barcelona for. So it was OK and also ensured our early wakeups. Overall the building is rather old, so expect hearing your neighbours very well. But again, that was expected and not an issue for us.
The location is great. A lot of places can be reached by foot as well as good transport connection. For us it hits the right spot where it's not the claustrophobic old city and not the sterile new district. It feels like the most of Barcelona. Great place to spend your nights while you spend your days in the city.