Concepcion's place is great. Beautiful view. If you are really sensitive to the pollution (exhaust from the major roads nearby), especially in heat, it might be a little more difficult to you since it is higher up with that gorgeous view. But as long as you are prepared, you can navigate that and it will be worth it. That has little to do with the quality of her place, though. It truly is an outstanding stay, and Navarte is a cool colonia that I actually prefer to Roma and Condesa for the day to day. Bus stop right across the street, really in a central area with a ton of stuff from 7-11 and Starbucks if that's what you need or little dive bars, food stands, etc within 5 minute walk. Parking is a bit difficult if you have a car, so be prepared to park at least 5-10 minutes walk away regardless. Still, even late at night/early morning, never felt worried about walking with lots of lighting in the area and open space. Would do again!