I'm about to have that happen again, at least not as a surprise.
A pipe in my part of the building is problematic, and my landlord and a plumber are going in tomorrow to fix it. We'll see if my bathroom will be out of commission for most of tomorrow or for a day past that.
Whatever happens, tomorrow will be a little odd. I'll know once I'm home from work what progress they've made. (I'm hoping they install a secret passageway. Come on: ALL ABODES WOULD BE FAR COOLER WITH SECRET PASSAGEWAYS. If I ever have a home designed, I'd want at least one.)