Mestral Mar is a great residence to stay in Barcelona. It has an elevator and Central AC, rare in Barcelona. All areas were clean, the kitchen, bathroom, terrace, living area, and of course my room was very clean. There are 2 WC and 4 showers, but I never bumped into anyone during my stay in August, I assume it's more lively other times of the year. There's a rule of silence after 9 or 10PM, so sleeping here is great. Dinorah, the manager, was very approachable, friendly, and answered all my questions. Highly recommended!