There’s a difference between being frugal and being cheap. Frugal would be getting a small studio appartment to sleep in during weeknights. Cheap is sleeping on a cot in your office.
An office is provided as a place to conduct the people’s business, not as a temporary bedroom. Turning an office room into a makeshift bedroom creates extra work for the janitorial staff, leaves a bad impression for visitors, and creates awkward situations for the Congressman’s staffers who are often expected to work late nights or early mornings. Also, you can bet that the staffers, who make much less money and are also expected to travel between the home district and DC, are not afforded the same opportunity to save on housing costs.
He has a folding cot, so his bedroom is out of sight most of the day.
A valid point- there are plenty of staffers making $30K a year or less who figure out how to live in DC.
Frankly, this seems a little unseemly- our Capitol should not be a flophouse.