Overall, my Mom and I enjoyed our stay in Ricardo's home. Ricardo was flexible and allowed us to check-in 30 minutes prior since we arrived sooner. The doorman was also very attentive. The location is great and you're only a mile (12 minute walk) from the main street Av. Alvaro Obregón, where there are many restaurants, grocery markets, street food vendors, and shops nearby. However, if you are a pair of women, I might recommend ubering home rather than walking as the Tonalá street from the apartment down to the main street is relatively quiet at night - uber is $3-$4 USD. The home was also comfy and the balcony has a great view of the street below!
Con: The toilet seat in the guest bathroom was broken and slid off when we first arrived. Additionally, the showerhead in the main bathroom leaks and some of the water pooled onto the bathroom floor my first time using it. I was mindful to push the water from the edge during subsequent showers. I informed the host of these issues following our stay. Given you are staying in the city center, there's also city noise and music at night (expected) so would recommend bringing ear plugs.