The DDA does require premises to make "reasonable adjustment" to allow access, but what is reasonable?
There has, to my knowledge been no case brought under the DDA, so therefore no case law.
In the case of the scenario hotel, I would suggest that a wheelchair user has a room on the ground floor as this would aid evacuation as the person could be identified as "at particular risk" within the fire risk assessment. Rooms could be provided on other levels dependant on the requirements of the user, but bear in mind that disabled persons don't tend to like pointing the fact out and like to be treated normally.
How many hotels actually provide the facilities for guests with sight or hearing impediments such as rooms with flashing strobe lights or vibrating pads or pagers? In reality, not many and unfortunately it is something that, until challenged is an oversight. They rely on the persons accompanying the guests to make sure they escape, which is not acceptable.
Having done some research into the matter some time ago, disability covers a wide range of issues from physical ability to mental health and medical reasons. A person with a broken ankle is classed as disabled due to the fact that their mobility is impaired, albeit temporarily, but would this person need a ground floor room? I would say not.
I have dealt with a student accommodation block with a wheelchair user on the 8th floor. Not a problem as they were located right next to the protected stairway complete with refuge, had appointed persons to ensure welfare and a Personal Emergency Evacuation Plan provided by the owners with staff instructed to make contact as soon as possible when the fire alarm actuated to account for the individuals location.
I agree with Val in that failing to provide an emergency action plan accounting for these persons will render the FRA not suitable and sufficient, it also relies on sufficient numbers of staff to implement those procedures.