I wish I had done powered shades in our basement. We did cellular blackout, as we have our theater space down there and need it dark for that experience. And they never get opened during the day unless we make an effort to open them. If I remember you have bedrooms down there, so maybe that's less of an issue for you.

You can get shades that will clip into the bottom for doors so they don't bang when the doors are used. Our cellular shades clip in at the bottom of our basement door.

We just have a guest room. The room is primarily used by kids as a play space or to hang out with friends. Most of the time the blinds would be open but sometimes the sun shines right in.

Oh, ok then. If you want blackout, the cellular blackout work well for us. If you aren't concerned about that then I would do light filtering as well. If you like the idea of automatic shades I recommend that. I would've liked automatic as I like having ours closed at night and sometimes they don't GET closed so I have to go down there at night to close them.

Get solar shades they cut the heat and the UV but let you keep the view.

We have solar upstairs but keep up unless sun on them. Need to figure out the French doors thougu

The blinds on our door are outside mount. they fit behind the door handle when lowered and have a clip on the bottom to keep them in place. I'm sure whatever particular window treatment you want would work similarly. The only ones that probably don't are large format cellular or wood blinds.

Blinds have been ordered. We shall see. Went with blackout ad cheaper and will only be down when sun in room.