I've business travelled just once [for the record, my job doesn't require me to], and I hated it.
Well, I hated the hotel. And needless to say, the whole trip turned out to such a drag. Both the room and the service sucked. Food [the local restaurants] and the shopping did salvage my trip though.
Coming back to, hotels and their rooms. Those who travel often, look forward to neat, fuss-free, comfortable stay [no gut feeling here, facts from frquent travellers]. The good room, and the good service are the most important factors; availability of multiple cuisine restaurants and other facilities follow next.
People are now warming up to luxuries on offer, more the better. New and special offerings always make the difference; setting hospitality trends and creating the buzz. Having said that, but you can not mess with your basic offerings, it's always the basic that make the cut... you know the mattress and the pillows.