Bertha's place is great. It's close to everything in La Condesa and La Roma, lots of restaurants and bars just around the corner. So if you're looking for diversity, this is definitely your best option.
She's awesome, a very nice and friendly person, although unfortunately we never met, communication was always so easy and effective.
Mary, the cleaning lady, is also a really kind and attentive woman. Both of them made sure that our stay was as pleasant as possible. I'll definitely come back here on my next visit to mx city. HIGHLY RECOMMENDED.