www.teletext.co.uk is always good for deals - we stayed just outside the lakes in a country house ish hotel a couple of years ago for £50 per room per night...
for info try local government / tourist web sites. I like
www.visitbritain.com and there's an acoommodation search page here...
http://www.lake-district.gov.uk/
Hope you find something, and I think the Lakes would make for a fabby honeymoon - no doing your choices down!