Hallway window - What options are there, experiences?

Dear house-building community,

we are currently in the design planning phase with our architect. It’s going great. We are getting the house of our dreams. Unfortunately, the design has a small catch: the tricky window for the upper hallway.

The hallway is an interior space and can only be accessed via the stair railing. Our first idea was to interrupt the attic stairs at this point and install a roof window. After a lot of back and forth, we discarded this idea and settled on a fixed glazing in the stair railing measuring 1.50m x 2.00m. Since our garage is behind the stair railing on the north side, the window will only start at about 3 m height and is thus difficult to access from the stair landing. Another disadvantage is that the fixed glazing cannot be opened, so there is no possibility to ventilate the hallway in the evening. We fear that a normal window with a 3 m sill height (to make it accessible) will bring too little light into the upper floor hallway.

Here are the interesting parts in the floor plan (north-oriented). Both hallway areas with all lighting options have been included:

EG (higher resolution in the attachment):
[IMG alt="EG.png"]https://www.hausbau-forum.de/data/attachments/86/86408-9f4889e2807d7bd9501dd7c295f1cf15.jpg[/IMG]

OG (higher resolution in the attachment):
[IMG alt="OG.png"]https://www.hausbau-forum.de/data/attachments/86/86409-6708da146d069b5eaf0674d4392a029d.jpg[/IMG]

Side:
[IMG alt="Seite.png"]https://www.hausbau-forum.de/data/attachments/86/86410-497e1b2f13add331e18a3b7e7e3f045b.jpg[/IMG]

So our question is quite simple: What alternatives do we have if we want:
A) A window that mainly provides good lighting for the hallway on the upper floor and the stairs
B) Is accessible for cleaning
C) Can be used for ventilation

We look forward to your answers.

Windows with motorized drive. Otherwise, show everything. There might be better solutions.

If you want meaningful answers, you should also show meaningful sketches. The exterior views and the elevations are crucial here. How many floors are there anyway? Is there a half one? My first tip would be a divided window. For the upper part, you then need a ladder for cleaning.

Thanks already for the tips. I do not show the entire floor plan intentionally, as it is a preliminary draft that I do not want or am allowed to publish here. Also, we are no longer really concerned with the floor plan, as it is mostly fixed (and might eventually be published here in the forum). Of course, I can gladly answer individual points.

The decisive factors here are the exterior views and the elevation levels. How many floors are there anyway? Is there a half floor included?

Two full floors. Room height presumably 2.50 m. Mostly flat terrain. The exterior view is not primarily important to us, but I have attached another excerpt with all the windows on the north side.

My first tip would be a divided window. For the upper part, you then need a ladder for cleaning.

The lower one then divided twice (see sketch) or can I also get it with 1.50 m with full opening?

The lower part then divided twice (see sketch) or can I get that also with 1.50 m with full opening?

As far as I know, the window makers build you everything you want.

As far as I know, the window manufacturers build everything you want.

I can confirm - my hallway/staircase window is also rather unusual: 1.20 wide and 2.40 high, divided into three parts: bottom fixed 80 cm, middle normal tilt and turn 1.20, and fixed again at the top. The amount of light coming in is really great, super bright, and being able to ventilate is worth its weight in gold!