Sergio's place was very nice and clean! It is as stated a hike to get up to the fourth floor but we were out most days and only had to make the climb twice a day (I counted it as a way to burn off a few tapas haha). The apartment is well situated on a main road and near a bakery for morning croissants and the Mercat was across the street. The Metro was less than a 5 minute walk and getting to the Gracia neighborhood was a 10-15 minute walk as well. We were quite surprised at how loud it can get with the traffic (disturbingly so) but we did not let it disrupt our vacation or time in the apartment which was minimal anyway. The neighborhood is very safe and so is the apartment building. They have a list of maps and up to date guides that can be used to map out daily adventures. The host did very well to debrief us on the location of the apartment and a few things about the city. Sergio was always very responsive and accommodated our check in and check out times. This apartment is a great place to stay and if we return to Barca, it will be on the top of our list!