We got to Blue Mountain every year, and we stay at Mountain Springs Lodge, it is not far from weider lodge, and blue mountain. They have beautiful rooms there. They go from studio suites, to 1 bedroom with a upstairs loft, with 2 bthms, full kitchen, with dishwasher and everything. They do have some new rooms they have re-done, and they are more expensive, the older rooms are fine, so if they are cheaper take it! They also have an outdoor pool they heat all winter long! If you do a search for mountains springs lodge collingwood, you will be able to take a look.
Also, just from experience, if you call, ask them if they have any stay 2 nights, get your third night free, or 3 nights, get your 4th night free. We have stayed there many times, and asked and gotten that deal! It's also a beautiful off season resort, and very cheap, in the summer!Hope this helps!