It's more likely to be down to individual hotel policy or a one-off for RideLondon. The Holiday Inn Express between Bow and Stratford (corner of Carpenter's Road) that I used in 2015 was very welcoming to cyclists. They had no problems with bikes being in rooms, although they did have signs up on the lifts saying one bike maximum at a time (admittedly they were very small lifts) and they laid on the buffet breakfast from 4am on the Sunday instead of their normal 7am start time, so they certainly knew their clientele.