Edinburgh car rental

We will be visiting Edinburgh on Celebrity Silhouette and may wish to rent a car. what car rental companies are near the cruise ship port?

Last year Celebrity anchored off Newhaven Edinburgh and i assume it will be the same this year. The nearest car rental which you could easily book from the US is Enterprise in Salamander Street. They usually pick you up from your location and take you back to their office to sign all the paperwork.