Bathroom remodeling in Miami is a humidity project before it is a finish project. The outdoor air is already wet, so a shower that weeps into the wall never gets a merciful dry month. Small baths in units and larger baths in houses fail the same way: a missing membrane, a fan that dumps into a soffit or a ceiling cavity, and tile that looks fine over soft board. Start with the room and whether you want a fixture swap, a rebuilt shower, or a layout that moves.
In a tower, the stack and the neighbor below are part of the job. A valve, a pan, and a curb that leaks do not stay inside your unit. Say so up front. In a block house on a slab, moving the toilet or the shower means cutting concrete, not sliding a drain across a wood floor. Ask what the waterproof layer will be, where the floor slopes, and whether the valve is new. The tile is the last thing, even if it is the thing you picture.
Ventilation has to reach the outside, which is awkward in a unit and easy to fake in a house. A fan that whispers into the ceiling does not remove shower moisture. It parks it. Miami air will not finish the job for you. If the room is still damp an hour later, if the vanity smells, or if the wall at the tub lip gives under a finger, say that. A grout refresh and a gut are different calls. Hollow-sounding tile is a clue, not a style note.
If you want a curb you can roll or step through, a seat, or bars blocked into structure, say it before the floor is designed. Salt air will also chew exposed metal finishes, so a coastal bath should not pretend it is inland. None of this needs a finished drawing to start the call. It needs the city, the room, and an honest report of what feels soft. Call the number on this page.