We spent two nights here. The communication with Marilusz was great. The description of the AirBnb was accurate. The room was very clean.
There are four rooms inside the apartment from which three of them were booked during our stay. As there is only one bathroom, you might wait some time in the morning or evening until its available. This was not an issue for us.
However, I have to mention that it gets very very hot inside the room and also inside the rest of the apartment. Marilusz provides cooling fans but this is not really sufficient in Sevilla during Summer. As other mentioned before, the AirBnb would be perfect with air-conditioning. Marilusz mentiones in her description that the room is not air-contioned, but we completely under estimated the heat at night. During our stay, temperatures in Sevilla climbed to 36°C during the day. In winter, I would book the room again, but not in summer.