Generally you don't need a car to get around, but if walking is not your thing, you might consider renting one in Athens or locally in Galatas town. Live-Bio is located a leisurely 20 minute walk including a steep 200 meters uphill (hey, you cannot have gorgeous views and be at sea level! – we are located about 40 meters above sea level, the 200 meters is the walking distance, but still pretty steep!) from the town of Galatas. From Galatas you can also go across to Poros island, 2min trip by taxi boat, 1 EUR one way). There is also a car rental place in Galatas so if you decide to do some road trips in the area, you can just get a car for a day or a few days and discover the nearby places.

You can find Live-Bio on Google maps as well.