Finally found a better deal................after browsing lots of boards about similar discussions; have a cancellable reservation with Dollar using corporate discount code OL5010 ; gave me a weekly rate for a convertible $239 plus $45 per day; total for my dates $535 inclusive. About $400 cheaper than any of the websites I could find, Orbitz, pl or hotwire, etc. ; hopefully this code might work for somebody else looking for the same time period.