Romantic beach hotels in November

I'm planning for a fort lauderdale beach resort stay for my wife's birthday during second week of November. We are planning to stay for 5 nights. We prefer secluded/lesser crowd area and waking up to great views. I looked up some hotels with private beach. We also love some luxury but don't want to splurge too much since we have another trip coming up in January.
I'm capping my budget for hotel at 400$ per day. Any suggestions based on the requirements would highly be appreciated