Argostoli is approximately a 30-minute walk to the shelter, and Lassi approx a 40-minute walk to the shelter. You could also hire a bike or car, and directions on how to get to Animal Rescue Kefalonia can be found on this page. It's also not expensive to get a taxi to ARK (under 10 Euros) from Argostoli. Marina or Joyce can then call one for you when you're ready to go back to Argostoli, or you can likely grab a lift with one of the other volunteers at ARK.