There are several boat rental companies on the lake, but if you are looking to tour the water front villas like a rock star look no further than Como Classic Boats. They are based out of Laglio (where Mr. Clooney lives) and have elegant wooden Rivas you can rent by the hour with a captain. Pull up to that restaurant in style and see Lake Como from its best angles. These romantic, glamorous boats are perfect for weddings, of course. If you'd like to rent a perfectly fine fiberglass boat on your own, or 'con capitano', two longstanding company options are listed below as well. A nautical driving license is not required for 40 HP engines, above that you'll need a licensed captain.
Como Classic Boats
Via Vecchia Regina 48
Non Solo Barche is located right on the Cernobbio Riva, steps from the
Cernobbio/Villa d'Este traghetto (ferry) stop.
Cantiere Mostes is located on the other side of the lake, in Fagetto Lario.
Depending on where you are staying, this might be more convenient for you.
They have fiberglass and wooden boats.
Via Alle Rive 19