Wonderful stay in Mexico City! This was my first trip and I will definitely be back. Lucia's place is located in Polanco, one of the safest and nicest neighborhoods, with plenty of restaurants and services (money exchange/corner market/etc) right outside the front door. The apartment itself is clean and perfect for 1-2 adults, with a bedroom, full bath and a hall in between. The roof top terrace is awesome! With several chairs/loungers and a ~270 degree view of the city, it's a great spot to relax after a long day. Lucia also keeps a tray of goodies and a mini fridge of treats, which is where I found a beer, so wonderful after a day of exploring!
Lucia is wonderful at communicating; she checked-in several times via messenger, offered plenty of ideas of things around town and even left an umbrella for the rainy days.
The flexible check-in/out times were also great for me - my flights were at 5am so I was in and out at odd hours with no problems - the door man is a peach! :)