We stayed two nights at Jose's apartment and it was very conveniently located, next to underground Linea D of Av. Santa Fé, from where many buses can be taken. The flat is perfect as a base and has all you need to support you. I knew BsAs already, but Jose and Paz were available over the phone or whatsapp at any time if we required any information. You will also get a transport card (Oyster) per person along with the keys, so all you need is to top them up and set out to explore the city.
Thanks for hosting us.