Great place to stay, very different of others Arbnbs, so it's a good experience. Alex and Lina are great person, what makes this review a 5 stars.
But I had some big problems that can be your problems, the water heater wasn't working properly, so the showers and the jacuzzi didn't worked well, this in winter is really important in BA. Other problem was the internet connection, it was pretty bad, the worst that I saw in a while, I work from home, so it's really important to have it.
The internet problem wasn't fault to the owners, so it's good to check if the company fixed the problems before you go.
The problem with the water, it's good to check if it was fixed. You can use the jacuzzi, but it'll demand some hours, as you can't fill it with just one turn of the heater. (it'll need 3 or 4, so, 2-3h to fill it)
These bad things doesn't make the place less cool to stay. I really recommend that you stay some time there. Just check if these problems was fixed, so you can have a amazing stay.