Batam CableSki Park
Waterfront City
1 hour S$25, half-day S$55 and full-day S$65
Popular cable-pulled wakeboarding outfit. Has a pleasant little attached bar/cafe and offers day and overnight packages from Singapore.
Tea Tree Spa
Holiday Inn
+62-778-381333
Well-regarded Balinese-style spa offering Javanese lulur scrubs, hot stone massage etc, set in a faux-Balinese temple courtyard. It's not cheap at S$60++/hour, but there is a 20% discount before 3 PM and quite a few packages for couples, hotel guests, etc. No hanky-panky!
Other entertainment options include the ramshackle Step 1 Go Kart Circuit near the Harris S$12/10 min and Taman Pancing Fishing Pond. The Batam Flying Club closed down years ago.