We have been visiting BCN with 3 kids, so there were 5 of us in the apartment. The apartment is tiny however was enough for us and kids. It was well prepared for all of us (we had enough towels, pillows, etc - perfect), very clean. Additional heaters made us feel very comfortable, as in April temperatures still can be tricky. It was unexpectedly quiet as for Barcelona - we were nicely surprised. Shops, bakeries, cafeterias are just a step away - perfect location, with a direct metro line to Barcelonetta :)