Hi genx,
Dubrovnik is a lively city of Croatia and the popular things to do in Dubrovnik are sailing, fishing and day trips. This city offers plenty of attractions include Dubrovnik City Walls, Dubrovnik Synagogue, Ethnographic Museum, Lapad Bay and Lokrum Island. There are variety of accomodation options available at Dubrovnik ranging from budget to luxurious. If you are looking for luxurious hotels in Dubrovnik then, I suggest the Dubrovnik Palace hotel which is located in Lapad Peninsula. It has excellent amenities and outdoor pools include a a sea-water pool, children's pool and a large pool with a swim up bar. It has a scuba diving centre and great access to the beach. So I think this Dubrovnik hotel is comfortable for you. As far as I know all hotels in Dubrovnik offer comfortable stay, even you can find numerous hotels at Lapad Bay, but book it out in advance.
Lokrum Island is one of the attractive islands of
Croatia and especially kids like this island. Visiting Lokrum Island is one of the popular Dubrovnik things to do of every visitor. You can do easy day trip from Dubrovnik and the ferry ride takes 10mins to Lokrum Island. Just take a boat from Dubrovnik's Old Port and enjoy the magnificent view of Dubrovnik. In Lokrum, there are no hotels, stores or restaurants, so carry all neccessary things for your kids. Swim, sun and relax with more fun and explore the botanical garden, the remains of a Habsburg fortress & the wonderful beach of Lokrum. Have a happy Dubrovnik vacation, Best of luck!