I'm trying to figure out the economics of a 5-star hotel.  For
example, if someone pays $300 for a hotel room, what are that hotel's
variable costs / hotel's gross margins?  For example:

Revenue
- Variable costs
-----------------
Gross margins
- Allocation for fixed costs
-----------------
Net margin

This is a tricky one, but right up my alley! Since I'm not a
researcher, I would say that you should go to:

http://www.str-online.com/products/HOST%20Study/2003/host.html

And order the HOST study. This study is a compilation of Hotel
Operating STatistics, hence the name, and is sorted by various
different categories. These categories include different service
levels, geographic locations, and sizes of the property.

This report will give you a great starting point for your hotel
economics/development needs. It costs $295 dollars, and is worth every
penny.

Good luck!