The apartment is placed in a nice area of the city. Lots of small bakeries, restaurants and a super-market just around the corner. We walked to everything: Parc Guell, La Sagrada Familia, Rambla, Piccasso museum, Rambla de catalunya and more, and we did walk a lot of steps, which we like.
Mar is a great host, answered all my questions very fast. The check-in was easy. The apartment is just as the pictures. A little dark and old, but charming. Two of the beds are a little small. But it was not a problem for us. Barcelona is great!