I had a great time in Matias's flat - it is clean and modern, with a nice little balcony, and it's really well located for Palermo's shops and restaurants. The two Subte lines are about 15 minutes' walk away, making the main tourist spots relatively easy to reach. The laundry is easy to use, and the security guys friendly - though you will need quite a bit of Spanish on first arrival, to explain who you are! The area and apartment are very safe. Matias was a good host, answering queries quickly, and the wifi in the flat was a big bonus. All in all, highly recommended!