、。
I want everything tidied up by this time tomorrow.
Literal
Tomorrow [possessive-の] this time [until-までに], all [possessive-の] things [object-を] tidy-in-advance want-others-to-[てほしい].
~てほしい expresses 'want [someone else] to do X' — distinct from ~たい ('want to do X oneself'). 整頓しておく combines 整頓する ('tidy') with the ~ておく auxiliary ('do in advance'), so the full force is 'want it tidied up ahead of time.' A slightly bossy or managerial tone.