Styx Mill Country Club is a members' country club at 160 Hussey Road in Northwood, Christchurch, rated 4.7 on Google from 31 reviews. It has a gym as well as a pool, spa, sauna and tennis courts.
The website describes a 25-metre two-lane pool, a children's rock pool, a large spa pool, a sauna, a weight room, a cardio room, three tennis courts and a function pavilion. The club is owned by its members and governed by its own rules, and some memberships are reserved for residents of the Northwood area.
For families and locals in Northwood and Belfast who want a pool, tennis and a gym in one club, this club on Hussey Road is worth enquiring about, with the membership rules checked first.