Swimming pool (Cairo)

Little question for all the members.
Dear all,
is there a quiet place in Heliopolis (not crowd) , where enjoy a day in the pool with the family?
I saw several places on the web, but you must be client of the hotel, member of the club, or friend of the friend of the friend...
Any easy-clean solution like go, pay, enjoy and see you soon?
Many thanks in advance.
Giuseppe