Are there any other hotels in the greater Orlando area that have double beds? Very likely. Are there any that Priceline calls 4*, 800 reviews, 8+ rated, with a $35 resort fee? Very, very, very unlikely. As it is, Priceline seems to have only one 4*, 800 review, 8+ rated hotel in the Bonnet Creek area (Are you looking in Bonnet Creek? You didn't say) and it's the Dolphin, which happens to have double beds and a $35 resort fee. Further confirmation: Priceline shows the Dolphin as $251 as a transparent deal when I search your dates; your Express deal is $215 after 14% off. The math matches. I'd say it's a 99.99% chance that you've found the Dolphin.It does have 800 reviews & also says 2 double beds. Do any other hotels have double beds?
The remaining question is whether it's a good deal. Priceline Express deals have a fee which they hide under "Taxes and Fees" when you look at the final price. It's about 10% of the room rate. That means you're only really saving about 4% if it says 14%. Meanwhile, you're locking yourself into a non-refundable deal. You'll ultimately have to decide whether it's worth it, but I recommend that you check out what the refundable rate would be to stay at the Dolphin for your dates before committing to a non-refundable rate. Marriott offers various discounts for AAA, Seniors, etc. including, as already mentioned by someone above, Disney Annual Passholders. Is there any chance of the price going lower between now and your trip? Yes, but there is also a chance it'll go higher. I don't know enough about how the Dolphin's prices fluctuate to predict which way it'll go. Good luck.