Casa Cosi is a wonderful apartment in a quiet, tree lined neighborhood surrounded by restaurants, markets and small bars. All the restaurants have tables on the sidewalk or on a plaza inviting you to sit and have a glass of wine or a beer after a day of wandering. It's a pleasant 10 minute walk to Las Ramblas and the Bari Gotic district. The check-in couldn't have been easier - Sylvia was waiting for us when we got there. It's a pretty small apartment but my wife and I were out all day so that was no problem at all. We travel light so getting up 3 flights of a narrow staircase was easy, but if you've got a big suitcase it might not be. I would recommend Casa Cosi to anyone traveling to Barcelona.