I’m just curious how maintenance or needed repairs during the middle of the night is a big deal? Haven’t you had plumbing work done on your house that required the water to be turned off for a few hours? I know I have. Same with the electric service when we’ve made various upgrades over the years.
I get that it’s annoying, but is it really a big deal? If you have to go, go, close the lid, and flush in the morning when you wake up. Have a pitcher of water for hand washing and a bottle for drinking.
I travel extensively for work and the same thing occasionally happens in hotels. It’s not like they’re saying no water for 24 hours.