@Paul457
As Garry and Rashid said if you don't share bathroom, kitchen or entrance than it is apartment / entire place.
If it is in a house and you live upstairs or it is in a building and other tenants lives upstairs or on the same floor is not relevant if you ask me ( but you can include "we live upstairs" in your description, it could not hurt.)
For example we rent 2 apartments in a building and there are another 10 apartments with tenants in the same building. And not just that , our place is basicly one big apartment which is remodeled in 2 apartments so they share the main entrance and the hallway. Because that hallway conect/separates our 2 apartments it is also possible to rent both of them as 1 big apartment.
We list each of them as apartment/entire place and nobody ever questioned that. (We also have a floor plan in our gallery and anybody can see it in advance.)
You listed it correctly but some people immagine one thing but in reallity it is something else . Not to mention guests who do not read and rent a room thinking they rented the apartment 🙂