I'm wanting to wire up my home with ethernet, and due to the age of the home (1920s), there is a significant lack (zero) wardrobes to stash a network setup in. I'm looking for recommendations as to where I could set a good permanent home for my networking gear.

The two places that I can think of are the laundry (which I'm not too sure on due to the humidity from the washing machine and potential future dryer) and one of the kitchen cabinets (potentially the pantry as power is readily available, otherwise in one of the corner cupboards that aren't immediately accessible/useful. Are there any concerns to be had with either of these locations? Would there be other common places that I should think of? Ceiling (what about operating temperatures)?

The previous owners also got fibre installed directly into the hallway. I would prefer to look at moving this and consolidating the gear (currently running an ethernet cable around a door frame to get it into a useable location), is it relatively easy to move the ONT? Is this something that I would need to contact the fibre provider about (Ultrafast Fibre)?

For reference, would be looking at just running ethernet to the bedroom we've set up as an office, the lounge and to the UAP that I want to mount to the ceiling. So probably looking at 3-6 runs total. Current gear is an edgerouter light, unifi poe switch and uap.