We loved our stay at Julián's Palermo apartment :-) He, along with his mother, are first class hosts - extremely kind, helpful, informative, and always available. The apartment is spacious and has excellent facilities - the comfortable beds and superb air conditioning really stood out, as did the laundry room on the floor above and the roof terrace to hang out our clothes. The apartment block and apartment itself are also extremely secure so we had no issue leaving our valuables there. And the apartment location is excellent - just around the corner are top quality restaurants and dozens and dozens of bars. If I ever return to Buenos Aires I will definitely be contacting Julián again.