Roof windows always with ventilation function?

My new roof is ready to go and is supposed to be installed soon. Everything is settled so far, and I have no more changes planned, except maybe one.

The roof is 14m long. 7m of the new roof will be designed as an exposed roof truss. The hallway in the apartment is about 5m long, and 2-3m of it is in the area of the exposed roof truss. Normally, my hallway has no window, but since the path from the hallway to the roof will be open with the exposed roof truss (previously attic or partially attic), it might be an option to install one or two skylights near the ridge to get daylight into the hallway? For ventilation, I also find one or two skylights in this position very practical. I am less worried about dirt because there would be hardly any roof or roof tiles above the window. The skylights are, if I have them installed/can have them installed, oriented northward. I think no external shading is needed then? It is "only" the hallway anyway, and I hardly believe that corresponding skylights, maybe with sun protection film, would heat up the whole apartment too much? To have a size reference, the skylight(s) might have an area of 2-3m².

What do you think of the idea?

At what height (measured from the hallway floor) would the roof windows be then? Would they have to be operable by remote control? How to clean them? These are the questions that immediately came to my mind.

From the floor, it should be about 3m. Therefore, opening the window would only be possible electrically via switch/remote control. To clean, a ladder is needed.

Is an opening even necessary? I see this more as a pure light source.

No, an opening would not be absolutely necessary. I just thought about having an opening to properly ventilate the apartment. I have already lived in two attic apartments, both with insulation from the 70s. These were always very warm in the summer and every window that could be opened was, of course, a blessing. If you then have windows at the very top that can be opened, that would certainly be very practical to get the heat out of the apartment. However, the apartment is being extensively renovated and, according to the current plan, a roof insulation will also be added. Although everyone says that heat buildup will basically no longer be an issue, I am still somehow a bit skeptical about that. :)

What do you think of the idea?

If it is solely about lighting, I would use a daylight spotlight in your place; the costs are comparable to those of a good double casement window.

If it's about ventilation, then _only_ an electrically openable double casement window; that way you can also let the heat escape. How you want to clean it, of course, is a different matter ;-)

Construction expert on the go