Excellent host, replied promptly to all questions before and during the stay, the flat is very clean, well organised, with lots of useful items you can't bring with you (coffee capsules for example). Everything is made clear and Constantine was very accommodating with our delayed arrival flight on the Friday evening.
The main double bed is a relatively small one due to the size of the room but what it lacks in size it more than makes up for in comfort and what you lose in light (set back from the road and below ground level) is offset by the fact it would stay cooler in summer (avoiding the needless use of electricity and dry air for A/C where possible) and also was very quiet, despite us being there during the various parties around halloween and Dia de los muertos (day of the dead).

The area is animated without being crazy, full of locals more than tourists. Heading up to some bars toward the top of the road on a small square you find a few more but also a good deal of locals. Access is easy as anything with 2 metro lines within easy walking distance meaning jsut 1 change on the metro from the airport (probably about half an hour to the airport max)

Definitely would recommend.