Ralf's place was absolutely perfect for our stay in Buenos Aires! Centrally located, incredibly clean, and has everything you need for your stay. The views from the balcony are incredible and the gym is amazing. The building also has a 24hr security guard at the entrance so we felt even more safe (although the local area is completely fine - never felt threatened even walking back late at night). We didn't have a chance to meet Ralf in person but he's in the building if you need anything, otherwise they let you enjoy the apartment on your own. Marcelo did our check-in and walk through - he couldn't have been nicer or any more helpful - he's the perfect person to help you get acclimated with the unit. We're very satisfied with our stay at Ralf's place and will definitely stay here again next time we're in Buenos Aires.