Savas' place is awesome. It's very cozy and modernist, and the location is unbeatable - only a few blocks from the Subway D line, and a variety of buses that can take you to Boca/San Telmo and other places.
Plus, you are already in the heart of Palermo and within a few blocks from La Cabrera, a great steak place.
Savas is very thoughtful and helpful with advice for what to do in Buenos Aires as well.