We were 7 people and just about the perfect size. Fabulous location for a stroll (less than 10 mins) to the beach and to the Sagrada Familia (30 mins). The apartment is on 2 floors, one bedroom and off the living area with separate toilet and sink. Then upstairs three double rooms and one single. One double is ensuite and separate bathroom with shower over the bath. Nice 'starter' packs on arrival - a little something to eat and dishwasher tabs, toilet rolls etc. But lots of supermarkets in all directions. Kitchen is very small, but perfectly kitted out and enough room for 3 (4 at a push) around the kitchen table.
Couple of points fed back to owners, dishwasher not secured properly and falls out, electric socket hands off wall in bathroom upstairs.
Other (very) minor points - no hooks for towels in any bathrooms - difficult to dry them after use.