Great location, nice apartment.
We bought our own food and cooked in the shared kitchen with Hernan and his son. The apartment is basic but all you need for a short stay. We had a laugh listening to music together and even done a workout together in the apartment. Hernan offered ideas for places to eat and go out which was nice. They are very interactive and asked about our day etc.
My only slight negative was that they smoke at the door or window and you can smell this a little in the house, just a personal gripe though.
Generally a great base for exploring San Telmo and Buenos Aires. Hernan is a great guy and genuinely wants you to enjoy your trip. Thank you to Hernan and his son for making our stay very enjoyable!