We have visited Scotland 22 times and at least 18 of those trips have been late October to mid November.
We have spent most of our visits that time of year as far north as John o'Groats, Inverness, Aberdeen, and also Pitlochry, Isle of Skye, Isle of Mull, Fort William, Oban, and many others. There have been very view places that we wanted to visit or hotels that we wanted to stay that were not open while we were there. The biggest thing that was missing at those times were a lot of other tourists and midges.
Amongst our best hotel stays that time of year were in Spean Bridge, Bridge of Orchy, Glencoe, Portree, and for "big" cities Pitlochry.
If the original poster ( or anyone else ) would like suggestions for late season hotels, please feel free to PM me.