Apart from the very helpful and nice staff, the hotel needs some improvement. The place itself is an old house turned into a hotel, which of course means some adaptation was required. The room I stayed in was not comfortable at all. The shower had no curtain or glass to prevent the bathroom floor getting wet. The room was in the ground floor and there it had a big door/window facing the hall, so I could only get natural light if I didn't care about privacy.
In short, the place is nice if you're looking for a cheap hotel for just one or two nights in Buenos Aires.