I'm fairly certain that it is not a regular tub. We haven't had that type room, but someone told me they were out in the middle so to speak and you can see the ocean from there.
Just send them an email, they are VERY helpful & you will think they have known you all your life. I love this place & we are returning again in June.
If you have ocean view or mallory view there is nothing more needed - These are the view postcards are made of! Even street view of Duval is very cool!
Doubletree has a shuttle for one reason.....it is away from all the tourist action .. Hog's Breath, Sloppy Joe's, Fogarty's, Capt' Tonys, Duval Street, Hemmingways House, Mallory Square etc.
I know you won't be disappointed and will have a great time.