Valletta, the capital of Malta
If you take trip to Valletta on a warm evening after dark, you will probably think that aliens have abducted all the people. You will be lucky to see another person.
There are now a few nice wine bars in Valletta, but unless you know where they are, and that is your scene, you will wander around for hours wondering why the capital is closed up for business. Valletta is a place to visit during the day, lots of history, great walks and views, lots to see and do.
There are no nightclubs, few bars, but there are nice cafes open during the day.