The appartment we stayed in is very well located if you want to reach all sites of interest by public transport. The location is advertised as 4+2. We stayed there with five people which is stretching the space in the living room by quite a lot. Two of the rooms (the master bedroom and the living room with the sofa bed) have airconditioning which is very nice (if not necessary) in a Barcelona summer. The second bedroom did not have this. In addition, my daughters did not find the bed in the second room comfortable at all. In fact they preferred the sofa bed...
The kitchen has basic equipment but is not really suited to make meals for five (but then again, there are plenty of good eating out opportunities). What I bit annoying is that some essential things were missing. For example, the cap that in normally there over a shower drain was gone, there was no plug in the kitchen sink, nor was there a washing up bowl (we eventually used the largest cooking pot for that.
Overall we had a nice stay although there are some points that could do with improvement.