My friends arrived 1 day before me to the apartment. The apartment was super clean and very spacious. They said that the caretaker of the building (Gabriel) was very helpful when they were going to arrive very late at night at the building.
The location was around 30 minutes far (by bus and train) to the city center, in a very nice neighborhood.
Norbert, I unfortunately left my headphone in the apartment. Can I contact you by email?