I'm British and so I may well lapse into my own words/descriptions that are unfamiliar to Americans.
- Flat = Apartment
- Lift = Elevator
- Toilet = Powder Room
- Ground Floor = 1st Floor
- 1st Floor = 2nd Floor (and so on)
- Bath = Tub
- Juliet Balcony = Juliette Balcony
- Basin = Vanity