David and Nataly were very accommodating of a last minute reservation. The location was very convenient, the check in was a breeze, and they were extremely accommodating. Our only frustrations were our own fault - the apartment is very noisy because it sits above the avenue, so we don't recommend it for light sleepers! We were also a bit unprepared for the colder weather, and there is no heat or central air, so nights got chilly.
Overall I recommend their apartment - it's secure, they're friendly and accommodating, and it's a great location in the city. Just bring earplugs if you're a light sleeper, and pack a sweater if it's in the winter.