What are the best things to do in Bali?

Senggigi is in Lombok, an island next to Bali. You have to cross the channel to go to Padang Bai port in Bali. Kuta Beach is a touristic area in south Bali where all tourists visit, shop, eat and enjoy night life. If you would like to see some cultural programs, such as traditional dancings I suggest you go to Ubud, north of Den Pasar where artists stay, lots of rice fields, monkey forest, good restaurants and dances at temples at night. Nusa Dua in the south is best for the water sports. Diving is best at the north coast close to Tulamben. Enjoy your vacation. Hope it helps.