Preveza is a commercial harbour and tourist hub, with a marina, 3 boatyard (Aktion), many clubs, taverns and cafes, benefiting from its proximity to the nearby Aktion Airport.
Warning : From distance the buoys marking the narrow channel are difficult to see .Often you can meet a current in the channel, sometimes as much as 3 knots.
Go stern or bows-to or alongside the town quay, the bottom is mud, good holding, good shelter from the prevailing NW wind but with SE it can be uncomfortable and may become untenable in a gale.
Winter 2015 : Water and electricty points are being installed.
On Aktion to the N of the old ferry pier are three boatyards : Cleopatra, Ionian and Aktion marina. All have water, electricity, showers and toilets, workshop and other facilities.
I suggest a visit to the nearby Roman city of Nikopolis, built by Octavian to commemorate the victory of Antonio http://en.wikipedia.org/wiki/Battle_of_Actium
More info : http://en.wikipedia.org/wiki/Preveza
Weather forecast : http://www.windfinder.com/forecast/preveza