I absolutely loved my 1 month stay in Margarita's place. She's the perfect host and an all around sweet person, always quick to respond to texts. When I requested a bigger knife for the kitchen, Margarita went out and bought a new one immediately along with a vegetable peeler!
The apartment has that lived-in feeling that makes an Airbnb listing special with lots of personal decorative touches and all the amenities needed for long (and short) term stays including AC which was necessary on a couple of steamy summer nights. I wasn't able to make it out from the online pictures but there's a murphy bed that folds up into the wall that frees up space. I left the bed down though and it didn't cause any space issues.
The location was incredibly lively and vibrant on weekdays. However the area does die down on Sundays as most business districts would. I was a bit nervous at first but turns out there are police pairs around every corner including a permanent police car at the nearest corner (in front of the church) so it's unbelievably safe in this area even on empty Sundays. Weekdays are bustling with people so you will always feel safe. Also you're at the terminus of 3 major metro lines making any journey into the outskirts of Buenos Aires only 2 blocks maximum to whichever metro line... VERY CONVENIENT!!! You're also a few blocks from the president's house (Casa Rosada which isn't pink - more salmon colored!). Less than 15 minutes walk from the historic old district of San Telmo. 1 block away from iconic "Cafe Tortoni" where you'll see drooling tourists waiting in line presumably for a tango performance. For joggers, I highly recommend the Ecological Reserve which is about a 10km roundtripper.
Some of the reviews mentioned noise from the elevator shaft. It's true. Noises absolutely don't bother me so I didn't even notice after the first few times but if you're sensitive to noise, bring earplugs. Note, there will also be city street noise as you'd expect from a downtown area. After a couple of days, I completely acclimatized to the sounds to the point I heard nothing and slept with the balcony door open with buses roaring down the street even at night.
Considering the comfort, location and Margarita's attentiveness, I'd say this listing is a great value, especially for long term stays!
Pro food tips: Try Barcelona Burger around the corner! Up the street, there's Las Cuartetas (iconic Argentinian pizzeria). Just downstairs is a sweet little cafe or Starbucks 3 minutes away. Big Carrefour Supermarket 2 blocks away with an independent verduleria nearby. Small Carrefour Express half a block away. The Obelisk has all manner of international and local fast food less than 5 minutes on foot. Iconic pizza places like Pizzeria Guerin are just past the Obelisk. Good baguettes at big Carrefour or GREAT baguettes and pain au chocolat at "Le Moulin de la Fleur". Bit further but still walkable: "L'épi Boulangerie" for more great baguettes.
Pro WC tip: Flush the toilet WHILE you're making #2... you'll thank me later.