Very nice pool (once slime has been removed) would comfortably hold 12+ people. Camping is a bit rough beside pools, if you head slightly up the Wanganui river you will find a very pleasant grassy terrace (5-10mins from pools). This makes an excellent weekend trip from CHCH with only 3 hours walking each day.
Okoroire Hot Springs Hotel
Lower pool with gravel base
Okoroire Hot Springs Hotel
Lower riverside pool
Okoroire Hot Springs Hotel
Top pool, formally enclosed prior to recent redevelopment.