Fa’s apartment is great! I highly recommend staying.
So close to so many fantastic restaurants, markets (market el 100 is not to miss on Sunday mornings), parks, bars - walking distance all around Roma and Condesa. We felt 100% safe the entire time.
Fa is so generous is supplying everything required - coffee, tea, water, beer - all bathroom/laundry products too.
Her local recommendations are also spot on.