What is the date you need the room? I'll see what I can find on Hotwire and lastminutetravel.
I booked a one night near DTD on Hotwire, the Orlando Vista, for cheap. I wouldn't want to stay there my whole trip, but one night was fine. I've also stayed at the Clarion (used to be Comfort INN LBV) on Palm Parkway (got a great rate from TravelZoo), also at the Extended Stay Deluxe on Palm Parkway (had a certificate for a free night, thought it was pretty nice). Theres a Country Inn & Suites on Apopka-Vineland around the corner from DTD you can get very reasonably. It's across the street from Joe's Crab Shack and Walgreen's.