Does it matter if the hotel has a secure parking area for your bike?
Yes, if it's in a city. No if it's in a small town, but even then the least I want is off-road parking, and out of sight of people passing through on the main road.
Is it important for you to have a spot to dry clothes or even a small area for minor repairs?
No
Do you look for options like late check-in or early check-out flexibility?
Late check in is often really useful.
What about room comfort: is having a shower, a comfy bed, or maybe even a kitchenette something you value?
I want a bit of space, as my kit takes up room, especially if I'm going to bring the panniers in. A comfy bed is good. Breakfast is a plus too.
Or are there other factors you always check before booking a hotel?
I usually pick a place on the edge of a town, so I don't have to spend ages in traffic getting to the place. I usually want to be up and out quickly in the morning.