If you want to relax below a coconut tree, do be carefully because the heavy coconut fruit can drop from the tree and hit your head hard.
Kuta and Legian Beach can be very crowded with tourists and locals especially during the weekends. Be careful of your belongings and it may be hard to find a shady spot during this time.
The waves at Kuta and Legian Beach are very strong so you have to be very careful. There are lifeguards on patrol but they are quite limited as the beach is very long.