It's a very nice sized room with chair, table and storage, plus a small balcony to look out over the street as well as let in lots of fresh air.
The flat is very stylish with a nice big kitchen, bathroom, separate toilet and a few other bedrooms with other guests. It is on the third floor (without lift) of an old building, but the flat itself is very modern.
The host was very kind and visits the place everyday for cleaning and maintenance.
The major bonus is the location: it is right in the centre of town and you can walk to most places. On the other hand, it can be very noisy at night because of the central location which is normal for Barcelona, but I was usually very tired and could sleep through it.
Checking in/ out was easy and flexible. There is a cheap mini-supermarket next door and the Boqueria Market is a minute's walk away. The price was fantastic and I would definitely stay here again when I return to Barcelona!