Staying in this Palermo apartment was one of the best experiences I've had on Airbnb. Not only was the room located in an easy-to-get-around neighborhood, but there was plenty to do nearby and had nearby access to the Subte (the Buenos Aires Undergound).
The room is prepped to cook, was clean upon arrival, had some style, and allowed for easy and accessible luggage/clothing storage. We stayed in Diego's place for two weeks, and the apartment ended up feeling like a second home during our stay.
Best of all, Diego was an excellent host. He's open to speaking English, although my girlfriend did most of the talking in Spanish as she was just finishing studying abroad. Diego was extremely quick with responses, and even asked us if everything was going well a couple of times throughout our stay.
I wholeheartedly recommend Diego's place if you're considering the stay, you won't regret it!