Filiberto was very helpful and the communication was great.
However, the apt is situated a few steps away from "Buenos Aires" - the perfect area for shopping, bars`and restaurant- which means, the area is not the most peaceful one. They provide you a linen as a blanket (which might be typical "italian style"). The mattress was very very saggy, so not to recommend at all. During the night you could hear the cars in front of the apt or the running washing machine from the neighbor houses.
All in all, not for me again, but maybe for somebody else! Thank you anyway Filiberto for your help!