We had a great stay at Andreas's place. It was super close to bike hire and some good restaurants, and easy walking distance to San Telmo. There was an exceptional deluge on one of the days we stayed, which lead to a bit of window leakage, but Andreas was immediately responsive and couldn't have been more helpful. The loft is cute, has a wonderfully comfortable bed, and the building has a great old cage elevator that makes you feel like you're in a '40s Euro-noir. A lovely spot to stay that's a little out of the tourist rush, but perfectly mid-way between the rawer south of La Boca and middle class north of Palermo.