We spent a lovely couple days in the apartment. Location is great: everything is nearby (grocerie store, bus and metro station). Apartment is fully equipped, everything is clean, cozy and comfortable.
The only concern we had is that you need to keep total silence from 10pm till 10am. The rules are too strict. We had dinner one day and just in 5 minutes, our neighbor came and said that we need to be quiet or they will call the police. This situation was very uncomfortable. We were in need to have dinner somewhere outside, because we were even unable to just talk during the dinner intha apartment. At the same time there was always noise outside. It is strange, that apartment have 4 bedrooms (so they expect a lot of people), but total silence.
Plus, there is now lift. So, if you are traveling with elderly people or kids, it can be difficult to go up and down.
Thank you for comfortable staying! Barcelona is charming!