This is a great location, right next to a recognizable place and in a great area. Having lived in La Roma for six years, I was excited to go back and spend a long weekend in the area, and this apartment was a perfect launching pad.
Located between the two parts of La Boheme bakery and next door to Mercado Roma, you're within walking distance of both Condesa and Roma, with good access to the Metrobus - a little further to the Metro, but still doable. The living area is comfortable, and there is a nice kitchen. Everything is clean and works great, and Alex and May were always very quick with communication; check-in and out was a breeze.
There were some comments about the noise, and you definitely can hear Mercado Roma on Friday/Saturday nights, but to be honest it was less than I expected and better than many places throughout the city. If you're looking for a nice quiet apartment, you should probably skip Mexico City. Also, Mercado Roma closes down at 1am, which is a lot earlier than many bars in this part of town, so even if you're really bothered by the music it will be over at a defined time.
The price is right for this place, would highly recommend.