Have you looked at AirBnB in Glasgow Sam? I see there are a few rooms that might meet your criteria at a range of price points, like this one:
...and plenty more if you are willing to walk a bit and flip for who will be using their sleeping pad--- you are going to be doing a lot of that anyway!).
This is a first crossing for my husband and I and we hail from Canada so we don't have much in the way of advice to share. We have bought our tickets for the Citylink bus direct from Glasgow to Dornie since it suits our timing and keeps things simple, especially after an overnight flight and a stumble around Glasgow to find camp fuel and post office. Looks to be like there are other good options though. Perhaps we will see you at the Dornie Hotel or along the way.
Thanks for all the help. We have booked the 10am city link bus from Glasgow to Dornie arriving at 15:30 and some overnight accommodation in a cheap hotel the night before in Glasgow. We’re staying in the Dornie Hotel so hope to see some of you for a ale or two in the evening :smiley: