Let's start with positive things:
Two metro lines are few minutes away, 5 min walk is Central Train station - Sants.
Small, quiet street, really lovely and friendly neighbors.
Apartment was very clean. There is everything you need for cooking.
Andres let us stay with our kid. Around the corner is good playground and park.
If You need something to print out - there are two internet places nearby.
On the main street there are many small shops where You can buy fresh bread, sweets, meat, organic juices etc. Nearest Fruteria isn't the best one, we didn't like it compering to others.
Nearest supermarket is Mercadona, but there is a small choice of grocery. I would say that the best one is Al Campo (C.C. Diagonal Mar), but we didn't find it in the centre.
Astrid (a contact person who met us in apartment) was very kind, nice and responsive.

Unfortunately there was one bad experience as well. It was a toilet that didn't work properly already in the first day. We informed Astrid about that and next day plumber fixed it in 10 minutes. Andres informed us previously in email that toilet is number one rule in the apartment - not to throw anything besides toilet paper. It is obvious rule for us that we don't even break at our own household. But when we came back at home, we received a case through AIRBNB that Andres requests 164EUR from us for plumber's work. It was shocking, because toilet didn't work properly in our arrival day and we immediately informed contact person about this situation. We didn't expect that the host these expenses will require from the guests who are not responsible for that. In the end AIRBNB Resolution center closed the case and we were happy for good experience with AIRBNB.

My advice is: Dears guests, please check all the facilities (especially the toilet), equipment when You arrive in the apartment! If something don't work properly take a photo or video. And keep in mind plumber's advice he gave us after cleaning the pipes- not to throw in the toilet even toilet paper.

If there would not have been this bad experience, we would be satisfied 100% with this apartment.