Ryan B,
When I was at QR we stayed in the Hilton by the English Garden in MUC - very pleasant and easy to get a tram into the city. Marriot in Slough for LHR. One of the Amaris in BKK. Used to be quite decent layovers but not sure now. In general hotels will be pretty good but someone will always complain that's for sure!
Cheers
HR