We stayed 2 nights at Sergio's apartment. We loved the neighborhood as Principe Real park is just around the corner and you can walk to a lot of great places in the city from there. The apartment is super clean and all equipment is brand new - you can see everything has been done with a lot of taste (we loved the bathroom and also the spotlights in the floor!). Only downside if you have to find any: quite noisy at night as this is a lively neighborhood and the apt is located on the first floor, but this should be avoided by closing the windows.