1. Whiten the grout on tile floors (and in tile showers) with a solution of bleach and warm water and a scrub brush:
2. Clean your walls (for once) with a mop and a standard cleaner:
4. Buff your faucets with wax paper to prevent water marks:
Not only will your faucets actually shine, but the wax will repeal water to prevent future spots (so you can go back to being lazy once your family leaves).