Amenities - standalone nodes or outline nodes
What is the best way/practice to map amenities in a building that has its outline mapped?
1) Put a standalone node within the area of building outline (not connecting it to the outline)
2) Put the node ON the outline itself?
3) Draw the whole building outline and then draw smaller polygons on top of that that eventually fully cover the larger building outline?
I've seen examples of that both with creating a relation and putting all in that and just drawing polygons on top of each other without relations.
My guess is that 1) is a better practice? I've seen few examples of 3) in my area but somehow it seems wrong to me to draw building polygons on top of each other.
This picture shows an example of 1) and 2) of them in a single building:
![alt text][1]
And 3):
![alt text][2]
[1]: https://i.imgur.com/66xYHgW.jpg
[2]: https://i.imgur.com/X1XDPvy.jpg