Beautiful apartment, clean, nicely decorated. A bit further from Las Ramblas BUT I stayed somewhere closer to Las Ramblas on the back half of my trip and didn't like that neighborhood nearly as much as Mars'. We did pay to occupy the place for the night prior to our arrival as we were arriving at 7am and wanted to get right in. I'm not sure if Mar would have been available for such an early check-in but my daughter, who is studying in Barcelona, grabbed the key the day prior and said the check in process was very easy.