If you are looking to keep fit and chillout when you are in Bali, the Canggu Club located about 10 minutes drive from Seminyak up in the Umalas has everything. Indoor/outdoor tennis courts, covered basketball/badminton courts, huge swimming pool, squash, excellent fitness club, football/rugby pitch, spa, restaurants, library (with wifi) etc... I dont think you can buy a day pass but a month is less than $200. Many of the villa owners in the Seminyak area have bought memberships so if you rent a villa check to see if it comes with a membership at this club. If you've got kids in tow and want a break this place is perfect as you can enrol them in all sorts of lessons.