We stayed three nights at the end of August.
Alicia communicated well for the most part and had maps and suggestions for us.
The apartment is very well located: close to the metro, walking distance to several tourist sites, small grocery stores, easy walk to bars and restaurants in Masana. And even a local market around the corner, Mercado de los Mostenses, which is much cheaper than the tourist ones. (0.15€ for pickled vegie skewers instead of 2.0€!)
Inside is as pictured. Nicely decorated and spacious enough. The bedroom did get hot but the ceiling fan saved us. We found it quiet at night but the fan may have drowned out noises - not sure. As others have mentioned, care needs to be taken on the stairs.
The downfall was that the shower was blocked. Alicia tried to fix it but it remained blocked for the duration of our stay. She failed to respond to our final AirBNB message regarding this blockage, it was a Saturday night but still she did not respond even the next day after we checked out. This was the most disappointing part of our stay. I hope the shower was fixed for subsequent guests.