We loved staying at Penelope's apartment. It is cozy and the location is fabulous. There is a little bit of a walk to the subway station (about 10 minutes to the closest one) but walking in La Condesa is really nice so we didn't mind it at all. The isolation of the building isn't great, so it's easy to hear people coming in and out but Penelope has clear rules about quiet hours so it was never an issue at night. She also left some great recommendations for the neighborhood!