I spent 2 weeks in Yanina's apartment. I didn't meet her in person but my interaction with her was very reliable. Her friend Tomas arranged the check in/out and he was very helpful and easy to communicate. The apartment is found in a really awesome area with everything (restaurants, grocery, pharmacy, bars, laundry, really everything) needed in less than 5 minutes walking distance. There's good connection to busses and the metro is a a few blocks away. It's a fully safe area, pretty upscale I'd say, which is nice. Another big advantage is that the place is close to Palermo parcs in case you're into running as I am :-) .

Other people commented about the noisy fridge, I confirm it can be a little annoying for the sensitive sleepers.