Locals walk, pedal or drive to the little villages on the south shore of Shkodra lake. If they dont have a lot of time they go there for a coffee, but mostly is a place they go for lunch to eat carp fish. A lot of restaurants on the lake will serve fish, and Shkodra lake is known for "tave krapi".
Rent a bike, or find a tour operator that offers an excursion to Lake Shkoder, it is a good opportunity for a swim, enjoying pedaling, bird-watching, eating fish. It offers a picturesque view with the Albanian alps beyond the lake.
Go for a "tave krapi" dish in one of the restaurants along the shore.