You can learn the art of the 5/10 minute mad scramble clean 
- Find an empty cupboard, drawer or anything else out of the way
- Grab lots of junk you don't have time to clear up and stuff it in there
- Tadaaa, you're pretty much done!! Run the hoover across any really bad patches of carpet (I mean literally run with it). Or run a cloth over any very wet/damp/sticky bits of kitchen table/counter/floor
- Squirt air freshener or women's deadorant, whatever's nearest. Or fling open windows and pray
- Jam the doors of any room/cupboard/drawer the SW should never ever look in. For me, that's DD2's room and bathroom. If she went in there, she might be knocked out long enough for me to do some actual cleaning
- The SW is here. This is the most crucial part. You must take a deep breath, and when you open the door, you must have the expression and demeanor of a woman who is calm, who has not spent the last 10 minutes running around panicking, a woman who is in control and ever inch the domestic goddess.....
Actually, if you succeed cleaning in that time, you frankly are a Goddess 
Ooops, forget step "Grab the biscuits"!