My friend and I stayed at Luis' place for two nights. The house is well located, it is about 20/30 minutes walking from the main attractions and the city centre and there is also a bus stop very close to the apartment.
The room and the bathroom had all the basic needs. However, we didn't find it as clean as we expected. While we were looking for the wall socket, we found out it was really dusty behind the bed. The bathroom wasn't that clean
too and there was hair on a towel. The room was extremely moist and even if we opened the window, there was always a bad smell.
Moreover, the bedroom's door couldn't be closed from the outside and we also had some problems with the front door and the iron gate, maybe because of the high humidity.
The check-in and the check-out were flexible and we could leave our suitcases in order to continue our visit in Sevilla after the check-out.
As a whole, we wouldn't recommend it except for the position.