Need advices on motor renting.

Hi all! I am a solo traveller, couchsurfing in Athens! I'd like to rent a moto for a week or so just to be able to see around more freely, maybe go a bit out of Athens and see what Athens on the periphery is like. Do you guys have any suggestions for local shops instead of some nation-wide or international companies? (I don't know any Greek but I prefer local shops anyways)

Also, hit me up if anyone wants to meet up for a drink or food! I am actually here for a conference that's between 29th August - 1st September (http://esa13thconference.eu/) but have time to explore before/during/after the conference.

Loves!