I can HIGHLY recommend this fantastic pub/B&B in Lelant just a couple of miles outside St. Ives. 
We recently stayed here and found it very impressive, with an extremely hospitable welcome with superb food and comfortable contemporary rooms. 
The owner Bertie is the ideal landlord, very friendly and efficient. 
There is also a large safe car park for your pride & joy. 
To check it out, see here: http://www.thebadgerinn.co.uk/
Stoped at the Dolphin once a few years ago. That was not to bad as well.
It’s a sister pub in Penzance. Yeah we been there too…also highly recommended
We stayed at The Badger again this weekend. Can’t recommend it highly enough, and turns out the Guvnor, Bertie, is a huge car fan too.
HUGE portions of food and a delicious breakfast too.
Only about 30 mins from Falmouth too. 2.5 miles from St Ives and about 15 mins from Penzance.