I spent 4 nights in Barcelona with my boyfriend. Here is what I can say about the apartment:

We arrived late (at around midnight), and to check in we had to open the front door and the key box with codes that were provided earlier in order to get our key cards. We were told that someone is going to come the next day at 9AM in the morning, but no nobody actually came... It wasn't a problem for us, but still everything felt quite impersonal....

The apartment itself was alright, although it did not have the cosy flair that airbnb-homes usually have, it felt like staying in a hotel room. It should be mentioned, that all of the apartment in the house are holiday apartments (or at least most of them, considering the many key boxes when you enter the house).

We were only provided with two big towels for a stay of 4 nights, which was insufficient for us (luckily we had also brought our own towels).

One of the pillowcases had a hole in it, but other than that the beddings were clean, and the bed was very comfortable.

The bathroom was well clean, but the shower curtain was moldy and very dirty, which I personally find very disgusting, especially considering that you can buy new ones for 10 euros. In the bathtub there was a mat (so that you do not slip), but I don't like those mats so I removed it... Under the mat there were plenty of long black hair and the tub had big rusty spots.

The apartment looks very new on the pictures, but actually it is quite old and everything (doors, etc.) was pretty used...

The AC worked fine, but it was extremely loud, so we could not leave it on during the night.

The location of the apartment is good, it is a 10 minutes walk from the Sagrada Familia, and about a 20 minutes walk to La Rambla. The closest subway stop is about 7 minutes away.

I felt a little unsafe in the neighborhood, especially since a guy who was also staying in one of the apartments in the house told us that he had seen someone getting mugged right around the corner of the building.

All in all, the stay in the apartment was alright, but if I would visit Barcelona a second time I would not book again, since I was a little disappointed with the experience.