I got into a panic about mine too but there was no need. All she wanted to do was check out access and parking. She didn't look at our bedroom - even though I'd cleaned it extra thoroughly in her honour!
We talked a bit about where in the house I'd like to labour and my pain relief options, and what would happen in the event of a hospital transfer etc.
Oh yes, and she reminded me to get in lots of bisciuits for the midwives to munch on!
'Twas all very straightforward really.