I did the math, that's 14.5k a month... and one bedroom apartment is slightly over 2k a month (double checked). 3 beds is 2.5k a month.
Average Rent in Washington & Rent Prices by Neighborhood - RENTCafé
Average rent nationally (for their home in their home state) is about 1.2k, but let's assume it's also 2k (house payments or whatever) and say thats all like 4.5k by adding another 500 to be safe. Where is the other 10k going a month? Lets say between vehicle payments and other costs (utilities ect), its 5k. So that's 5k a month let over from basic living costs before pay from their state that the article mentions, as well as direct contributions from lobbyists.
I dunno, but I think they can at least afford to rent a modest apartment in D.C. sure on the salary alone they can't live ultra rich but so what lol. It sounds like it could be more than comfortable.
What I would really like to see, is all these people who say they have to sleep in their office give us a breakdown of every single dollar they make and spend. Then we can talk about increasing their pay, because honestly we are their employers as voters and tax payers. We would also know how valid then the complaints are.