Perfect location for us as we planned to walk a lot around the city. It's about 10 minutes walk from the Placa de Catalunya. The apartment is big, nice dining table with plenty of light. No windows in the rooms but we went back only for sleeping so it was not a big deal.
The place is super quiet and there are very strong restrictions on noise which we appreciated.
Only negative point was that you could hear the water/showers/toilettes noise in the other apartments. But alas, those are old buildings and it's the way it should be.
Pity on Sundays everything is closed and we had some difficulties to reach our host but it was just a very minor issue. All in all we were very satisfied with the place and the price is correct.