We were 5 and our stay was not that good. Location was perfect to know every corner of Barcelona but the place had some problems.
Beds in general were not so good, but one of them was in a really bad condition, almost in the floor and uneven (we took turns to sleep there). When I told this to the host I got no response. Also cleanness was not that good and a couple of chairs were broken, so we couldn't eat together in the dining room as there were no chairs for 5.
Kettle was broken also.
AC worked perfectly as it was very hot.
Not the greatest experience and wouldn't stay again.