Tony, Sorry I can't answer your question directly regarding commercial type sites with a pool, but if you are going in period July 15 - August 12 then the Cornwall Distric Association of the C&CC run a Temporary Holiday Site at St Ives Rugby Club. It is within easy (well a bit of a hill on the way back) from St Ives beaches and town centre. There are showers and battery charging available and the club bar and facilities can be used. You have to be a member of the C&CC but with fees of only