Its a lovely appartment (just as in the pictures) and very clean, located in a nice neighborhood with restaurants and cafes. Ezequiel wasn't there, we were hosted by Tomas. He is really friendly and helpfull.
During our stay of 4 days we couldnt use the jacuzzi (it had to be cleaned according to the doorman. We asked it already on the first day!), which was really unfortunate because this was one of the things that made us choose for this appartment.
The Argentinian plug system is different from many other countries, you should bring a special adapter.