Perfect location in a relatively quiet part of Gracia, just a 10-12 minute walk from several different metro stations and only 5 minutes to busy plazas, cafes, restaurants, and more. A really great way to see some of the real Barcelona beyond La Rambla and the shopping areas, while still being just a very short metro ride away from those more touristy areas.
My son and I stayed for a month, and enjoyed that the apartment was clean, with modern appliances and kitchen (including shared washer/dryer), and a nice bakery and grocery stores right on our block or across the street.
We will be back to Gracia many times and will definitely consider staying at Martha and Paul's place again!