We were traveling in a group of 7, Casa Cosi comfortably accommodated all of us. There are two bathrooms, both fitted with showers, so even with so many people in, we didn't struggle to coop. Dining area and living room were large enough for all of us, so was the terrace, that we enjoyed A LOT. Location of Casa Cosi is one of the biggest advantages of this place. Opposite the apartment you have large market with all the awesome food that you can find in Barcelona, bakery is round the corner and there are plenty of coffee shops all around. Nearby bus will take you to La Rambla in 10 minutes. In short - great place for larger groups and value for money we got was really awesome.