Do yourself a favor and pay a little more to stay somewhere else.
As others noted, the many doors to this apartment are very difficult to open and could lead to being locked out at night. There is no one one staff at just despite the large number of people staying.
There is almost no communication with the host (who was never on the property as far I could tell) and instead he leave the works to others who you do not have contact information for. The room is actually much smaller than the photos and almost unbearably hot as the window opens to an internal courtyard, not the street.
After I had trouble getting into my room one night because the lock was misbehaving and snapped my key, I was given the phone to talk to a person I had never met and who was NOT Ariel. While yelling, he informed I needed to go find a locksmith myself or I would not be sleeping that night.
Stay in a hostel or pay a few more euros a night.