Sitges Marina (Aiguadolc) has a wide range of nightlife & entertainment, with
- bars,
- restaurants (others around Sitges),
- a couple of hotels (others around Sitges),
- a bed and breakfast boat (Willowmoon)
- and a nightclub (others around Sitges) ,
in the form of Sweet Pacha
(the original 1967, first Pacha is in the hills behind Sitges)
Also, there are usually a host of live music & open air cinema events during summer: SitgesEvents.com