We have stayed several times at the Doubletree by Hilton Cambridge and have never been disappointed. The location is great for the City and the views over the river and the punting station are wonderful.
The breakfast is particularly good with a great choice of fruits, pancakes, granola etc and all the usual hot food.
It has excellent car parking and of course you get the usual warm cookie on arrival.
The bar and lounge are very comfortable and welcoming.
I noted the comment in a review about the stair carpet being frayed on the first set of stairs and this is true.
It is not cheap but we paid in advance to get a price that was a lot less than some paid in other reviews.More