Hi! This may not help you very much, but I'll put in my two cents. The Residence Inn Seaworld is a new resort, but I thought their free breakfast buffet wasn't up to Marriot standards. (under-cooked sausages, not much variety in food, etc...plus, the chairs in the dining area were littered with stains!) The rooms there are clean, but nothing to write home about. If they try to give you a room close to the elevator, I would just ask for something else. If you have a room by an elevator you will be inundated with noise from guests using them.
I have never stayed at the Hawthorne Suites. I believe this is an older property, but I might be wrong. I really don't like staying at older hotels in Orlando because the housekeeping staff usually doesn't clean out the air filters regularly, and that drives me up the wall. (You can smell the dust and mold.)
Your best bet, in my opinion, is to book a room at a newly opened hotel in that general area. You may want to call
AAA and find out which hotels are brand new in that area. If you call the hotel directly you can probably get a better deal than booking through AAA.
Sorry to be so negative. I do wish you the best of luck in your search, and I hope you have a great time in Florida. Cheers!