What a great experience we had. We traveled by car from San Diego all the way to Mexico City and we were so lucky to find a place with a parking garage and in the middle of condesa and colonia Roma norte. The unit is on the first floor and has a gorgeous view of parque España. The neighborhood is super nice with lots of restaurants nearby. Mi wife and i walked at different times and always felt safe.
Quick recommendation: if you leave the apartment in the morning for breakfast and walk right about a block you’ll find an OXXO store. In that corner you’ll find tacos el gallo, a lady selling tacos de canasta and a juice stand that also sells tortas de jamón.
All main attractions are 15 minutes away from you (depending on traffic) and Uber is less than $5 dollars from main attractions.