I spent a month in this apartment. It was a great location to explore La Condesa and Mexico City.
Pros: Space was great, balcony was a plus, kitchen was basic but sufficient, filtered water is provided, Penelope's staff was very helpful and kind, supermarket, ATM, cafés are all less than 5 mins walk. The area is very safe and close to the parks and nightlife. The farthest walk might be the metro which is about 15 minutes.
Con: Internet was finicky. There are a bunch, so I joined as many as I could and switched between them as necessary.
I would recommend this apartment for an independent traveler excited to explore Mexico City.