My partner and I spent about 10 days working remotely and eating our way through Roma in Alejandra's spot. Overall, we enjoyed our time in the apartment and the spaces they have created. There were a few issues during our stay, some they were able to address immediately - their maintence guy was great - hooking up the speaker system and replacing some lightbulbs. Others that need more attention (see water equipment issues), but they seemed motivated to improve for future guests.
Pros: Location is amazing, so close to so many restaurants within walking distance, bike rentals, parks, etc. For two people, the place is HUGE - my partner was at the desk on calls many of the days and I spent time sketching in the upstairs attrium, and utilizing all the little nooks downstairs.
Cons: Mostly, there are a lot of equipment issues with the water. The sinks and shower pressure throughout the house is strangely variable (likely due to a overworked pump since its the top floor). It will be very low (sometimes no water comes out) and then suddenly very high - and then the water temperature changes very sporatically, which resulted in frustrating morning showers. In the kitchen, the filter leaks and there is a bit of an odd smell as a result. Couldn't get the bedroom TV connected, looking like a wifi connection issue. The Wifi upstairs is perfect by the desk and downstairs TV/couch nook, but any farther and unlikely you'll get a signal (I think they are looking into a wifi extender, it was purchased just not yet installed).
Given its early in its Airbnb rental days, I imagine some of these things will be worked out over time. We used the space well and were so happy to be in Roma a 2 minute walk from so much great food.