Kreitler has always (well, for more than 20 years) made the best rollers. Smoother and quieter than other brands. The noise factor should be less than your trainer. Will it slide under the bed? Maybe, depends on the rollers and how high the bed is. You can probably ask to see what the height of the rollers is. Some rollers fold in half for storage (maybe not Kreitler's though). Set up out to be easy. For the price you pay for a good set of rollers, someone should show you how to put it together.

Rollers are an excellent way to develop a smooth pedal stroke.