I adored my stay! The room and bathroom were as advertised; were cozy, clean, and simple; and the buulding is relatively modern and very centrally located. Vicino and his helper in the building were quickly communicative and helpful, and made me feel safe and appreciated. The only issue I experienced was no hot water in the shower on my first night, and difficulty turning off the shower head. A friend told me the occasional hot water issue -- fixed with some building knob-turning -- is common in many Mexico City buildings.
It is a simple and lovely stay for an on-the-go traveler. It's like having a private, en suite hostel room, though in a bustling downtown apartment building, with a fridge, microwave, and kitchen supplies. Thank you, Vicino!