Santorini or Mykonos closest to Naxos

Hi travelling from London and can fly to EITHER Santorini or Mykonos directly. But would like some beach time on lovely white sandy beach For 5 days to relax. Is Naxos best for this? Or happy to go to another island ? Taking my teenage daughter for water sports. Have limited time so don’t want to waste on travelling. Can you give me some advice. How much time should l spend on each island? Thanks.

Naxos is perfect for that!

Actually some time ago I ave written the best greek islands you can travel while using Santorini or Mykonos as your base: