Overall, I liked my stay at Marta's apartment. There was a carpet with a strong smell of dust, but I complained about it and someone came to remove it and vacuum after.
It's located in a slightly "dodgy" neighbourhood, close to evertyhing and I didn't have any issues really.
It's a small apartment, but cozy and quite good for 1 person, or even a couple, just for a few days.
Communication with the host was always quick and easy.