Overall the unit is FANTASTIC - it's new, clean, has great internet and TV - nice kitchen and bathroom - and the location is solid, not too far from a Mitre station and the lovely Belgrano parks
HOWEVER - I had to leave after only 10 days of a month stay as the elevator beeps each time it is used. It beeps in the elevator which is normal, but also it was broken in the sense that it would beep on two floors as well - the 13th floor which is where the unit is, and the 10th floor. No other floors had this issue (not even the ground level). Basically if someone got on the elevator on the ground floor and took it to the sixth floor you would hear each beep of the elevator when it passed each floor, but you would hear it ON THE 13TH FLOOR. So anytime the elevator was being used the beeping would sound out on my floor and into my unit. I bought ear plugs, they didn't work since it's such a high pitch beep (think a smoke detector beeping when the battery is low) - it was non stop all day all night and I barely slept the whole time I was there.
Federico and his property manager Mariana are both extremely nice and very communicative - as soon as I voiced the issue they tried to work with the building manager to get it fixed however he refused (saying he doesn't know how to fix it - instead of calling the elevator company or even just an electrician, so clearly this person has no idea how to actually manage a building) - and the other people in the units that were affected basically said: "we're used to it now, we just live with it". So to me that's just unacceptable. It's actually kind of indicative of the whole city at this point unfortunately - when something doesn't work right, they just live with it and don't fix anything. Really too bad since the unit was amazing - I am in a much worse unit now - however there is no constant beeping and I can actually sleep. So fair warning: if you are a heavy sleeper or don't mind auditory torture, this place is amazing.
Again, the host and his property manager, and the unit were great. But there is a constant beeping noise you will have to deal with.