Karina's place was a good option for a short stay. The bed was fine, and it was a huge plus to have a private bathroom! Be aware however that the room is right next to a more or less busy street and street vendors arrive early - be prepared with earplugs, as noise from cars will stop around 11.30pm and start in the early morning. There is a lantern shining into the window, making the room very bright, which we solved with hanging a blanket over the curtain.
When we saw her, Karina was very friendly. The kitchen is equipped for cooking some meals and having breakfast. The living room isn't the coziest though, but if you're here on vacation or don't need to spend much time there, it's fine. Escandon is just south of Condesa, but has a more local feel to it. There is a market right next to the apartment where you can get fresh produce. If you want to eat in the colonia, we recommend Cantinita Pop. The Majoma bakery with tasty pastries and bread is a 3 minute walk a way. The closest metro stop is about 7 minutes by foot, metrobus is a bit closer so you're well connected!