Rarely have I come across someone in this area calling a room a Florida room, but I think I know what is meant. Up here, what I believe to be a Florida room is as often called a three-seasons room, which is still a misnomer, since an unheated, uninsulated room can be used only four months of the year. The heated, insulated version is a sun room.

BTW, my home computer is in a built-in computer area, consisting of floor-to-ceiling shelves and such, stretched wall-to-wall behind bi-fold doors, in the family room. I got the idea from a parade-of-homes tour. Open the doors, and instant office. Close the doors, and the mess disappears! It is, as I described it to the builder, a glorified closet.