I am looking for luxury hotels on or very close to a beach, and also want the hotels to have a pool. We have young kids so looking for easy options!

You have enquired on Portofino, Singapore, Mallorca, the South of France, and beaches in general, with a one and four year old. Perhaps you should get a guidebook (or four) and come up with a plan that is less spread out and vague. Where are you coming from? How long is your vacation? Budget?

Where? We need a bit more information to be able to help.

The OP doesn't seem to care, having posted about Europe, the Caribbean, Mexico, Singapore....