My inlaws have their timeshare lodge at Coylumbridge, Aviemore available for rent for the 11-18 February.
With them being down in South Wales they aren't going to be using it this year.

Lodge 10 for Week 6 (11-18th February) which is February half term for some schools.
Alpine lodge, Sleeps 6, 2 bedrooms (double and a twin) plus sofa bed downstairs.
Full kitchen with dishwasher.
Living/dining room.
Car parking outside
About 8.5 miles from the ski centre at Cairngorm.

More info and virtual tour of Lodge 11 (same as lodge 10) here:
Plant Building Window Tree Sky

Normal rental cost a week is £1274 but he's after £1000.
Electricity is an extra charge.