We stayed at Sophia’s place for our first trip to Barça. We had a family of 4 with 2 kids (11 & 10) and it worked perfectly for our needs.
The actual bedrooms don’t have storage space in them, but the closet next to the bathroom is more than ample. We had all our suitcases in there and it was great.
This is an older building clearly- but the flat itself is updated. Kitchen has everything you could need.
From what I can tell this is not directly in a tourist zone- which personally we love. The local cafes, the local markets, etc. it’s very close to the metro and we had no problem accessing every part of the city we needed to get to. I would happily rent from Sophia again.