Thank you, when I learn josm I'll add the internals of la centrale as well.
The lifts to the west connect 3 plans: the lower parking, that is on the same level of the rest of the city, the upper parking and the upper plan of la centrale. On the lower plan there is eurospin, a supermarket, on the firts floor there are several business that frequently change, the persisting ones are a library (Giunti al Punto) and a clothing store (Zara, if I'm not mistaken), and on 2 there are various restaurants (sushi, meat, pizza, bar, pasta, desserts) sharing a kinda common space and tables. From 0 to 1 there are also external stairs around the lifts, from 1 to 2 there are internal glass stairs. The lifts doors are all facing east, on 0 you can go anywhere, on 1 you can go inside the building or reach the parking, on 2 you can just go forward inside la centrale. So the platform next to the lifts on the east side has 0, 1 and 2 as well. As soon as i can I'll add where the stairs are, add the internal paths at least and... I might add levels but I'm not sure on how to connect them 