I stayed one week in Marcos' apartment in Palermo. The flat is very well located, in the heart of Palermo Hollywood, with some of the cities best restaurants and bars at a stone's throw. Also close to Palermo metro ("Subte") station.
Marcos was a wonderful host. My entry in the apparement (at 02:00 am, due to my flight's late arrival in BA) was seamless. The apartment itself is everything depicted in the picture and more: well decorated, clean, functional. Amazing sunsets from the balcony ! Went to the gym on the 16th floor 3 times during my 7-day stay, at various times of the day and that worked well. I also used the laundry machine in the B2 basement (I just asked the doorman for some free coins) and that went well also. The wifi in the apartment worked very well :) I highly recommend Marcos apartment for a stay in BA !!!