Would highly recommend Marytrickle if you want a change from the usual hotels and motels where you're surrounded by others on holiday. Whilst it's attached to the main farmhouse at Maryburn station, there is no disruption from the farm staff at all. Being halfway between Tekapo and Twizel means that both are easily accessible in 20 minutes.
Apartment is built and furnished to a good standard and is very clean. Kids enjoyed being able to see and hang out with the merino sheep in the paddock adjoining the apartment. Obviously you don't get run of the whole farm in this day and age of health and safety!
The surrounding Mackenzie country is just stunning. If you're a kiwi who hasn't ventured out here, I thoroughly recommend you do!