For me it depends on who is coming round to what extent I tidy up or clean ...
For a good mate, who knows me very well I don't do anything bar check that the toilets are flushed and DS hasn't left pee dribbles on the seat.
For a friend I am getting to know and wish to get to know better I will have a quick tidy up, may run a hoover around if the carpet looks like a bird table, check the bathrooms look respectable.
For a new friend that I have invited round for the first time I will have a proper tidy up, vacuum all over and clean the bathroom properly.
I will always, always, always check the toilet, though no matter who they are.
What about you? Are you a "Take me as I am, no matter who you are" type or do you have 'levels' like me?