Xristos tries his best to be a good host. For a fee, he even offers to pick you up from the airport. He does not live with his guests however. The room is one out of three (that are rented out to others) which makes a shared apartment with other Airbnb travelers.
Access to Busses and metro is ok, and if you're good by foot you can walk to the most important sites of Athens.
You get what you pay for, as this is mostly a sleeping place only.