Sergio's roommate Matías was very helpful (didn't actually meet Sergio). I was in the small bedroom upstairs, which overlooked the hallway entering the building (there was some light at night). The second night a group of four young guys took the downstairs rooms, but they were fairly quiet at night; mostly I was the only one home. I really appreciated being able to do laundry. Overall a very good price-quality ratio. Gracias.