That sinking feeling

Plumber day 1. New kitchen sink fitted, new tap and replaced the flush thingy on the toilets. The downstairs cloakroom in particular had been sounding like a fog horn so we had all the internal bits and the push button replaced in all the loos.
Now I've got to find out how to keep the new sink clean. Instructions on fitting it but not on keeping it clean.
Day 2 and 3 in a couple of weeks time, new shower and shower door to be fitted, new taps on the bathroom hand basin.