Looking into going to Florida in Dec..depends on covid here.i wanna go some where warm..?

Find a few beach locations that interest you, then look up AirBnB and find a beach front place.

This shouldn't be in the Orlando section if that's what you're looking for.  The nearest beach is over an hour away.  

The farther south you go, the warmer it is likely to be.  So the Fl Keys and Miami areas will be your best bet.  There are some great Gulf Coast beaches and islands down south too - Marco Island, Sanibel Island, Anna Maria Island.  They start to get a little farther north though.

Well, if you want an ocean front, forget Orlando. We're 60 miles west of the Atlantic.

I also agree with Key West although ocean front with a balcony might be different than what you are thinking of

You also want to be concerned about Covid in Florida at the time. Further south will be warmer. Consider places like Sanibel Island or Marco Island.

Key West is always a good time.

In December the temperatures can't be guaranteed to be "warm" (at least by a Floridians' standard) unless you go to Key West, even then the high might only be in the low 70s.  You might consider going further south, say Cancun or Jamaica.

The farther south you go in Florida in December the more likely you will find warm weather.  Go to the Florida Keys if you can.