Pilar is super welcoming, as well as the rest of Pilar's daily assistants or workers. With welcoming I mean, she will help you in anything you need, and she will feel like family just as you arrive. Pilar is a super chill and flexible person :)
The description is pretty accurate, and the neighborhood is great. Everything you need is close by: a park to run on (Chapultepec), clothes stores, Mac Store, Telcel/Movistar if you need to purchase a sim card, TON of restaurants, the best bars and clubs. The place is also located in a very strategic place when it comes to touring Mexico City. You would be located in the center of the city: not too south or too north, just right.
I also want to add that breakfast at Pilar's place is great! The breakfasts are Authentic Mexican food, freshly prepared, and very tasty! Pilar is also very helpful in giving you suggestions about what to do in Mexico City.
Some cool amenities from the house: Wi-Fi, and hot water. Just wanted to clarify that.