We stayed at the Old Crown in Ogbourne St George. It worked out quite well. We had a family room (me, Sue and the 2 Squidlings), and they do quite nice food (they've got a little restaurant as well as bar food), and it's a pub (always a bonus!). Can't recall how much it cost, but I found a few refs to it on Google...

http://www.marlboroughwilts.co.uk/crown.htm