Taxi in Kalithea

Heey,

This year I'm going with a friend to Kalithea. We are sleeping at the Hotel Maria.
We don't have a own car or scooter and we want to go to Club Pearl, Angel Club and Ahoy Summer night.
By feet it is too far, about 25 minutes. My question is, if somebody know if there is a 24 hours taxi service?

And did anyone have any experience with car rental in Kalithea?

Thanks!

Anna