Indonesia – The most suitable area to stay in Bali if I have a conference in Kuta and mode of transportation

I am going to Bali in July for a week during which I will attend a conference for 2 days and the other days will be devoted to tourism. I have two questions:

1) Which area of ​​Bali would be best for my stay in the above conditions?

2) What would be the appropriate mode of transportation for renting a car or a local taxi?