This is permitted as an ADU but we're using it as a master bedroom and office.

The bathroom sounds like a good location

I'd want one in the kitchen

Placing one in a room that will be the bedroom doesn't work unless you have a method to control the light IMO.

Agree, I would strongly recommend against a skylight in a bedroom. It will let in too much light during the day and even at night, and it's tough to get shades that look nice and will truly be blackout.

Blackout shades for bedroom are possible, or maybe you sleep with eye shades anyway.

Definitely the bathroom. How I miss the large skylight in the bathroom of our former house. When passing muster in that bathroom in front of the mirror mornings, you were good to be seen anywhere 😊

I had two in our master and one in a guest bedroom. I loved the stars at night, never covered them. The light never bothered either of us but then we are both good sleepers, no issues ever. What did bother me was the night I awoke to little faces peering down at me - raccoons on the roof.

All my skylights faced E in a sloping roof. Houseplants loved them. I did have some sun damage to the top of a long dresser placed directly below the skylight in that guest room. Walnut dresser, it had not been inexpensive but several years of even morning sun didn't do it any good.

A little late, I mounted small diameter curtain rods top and bottom of the window and had sheers made to fit that 'roof window'. They weren't operational but didn't need to be. A remotely operated blind for that sun light would have been silly expensive - I checked.

For what it's worth I always like having skylights in places where you can't otherwise get light from a window such as Bathrooms and hallways.  These areas can bring light into darker sides of the room at the interior portion of the house.

I wouldn’t mind one in the kitchen and bath, and maybe the laundry hall, but there a better choice would be a solar tube.

Thank you for all the feedback! I appreciate it.

I avoid skylights because they are penetrations in the roof and a potential roof leak.

Mark, this is the rain drenched coastal pacific northwest and the only skylights the architect would sign off on for our addition were Velux with their factory flashing. We were there another 25 years, never a sign of any water intrusion. As far as I know, none have taken place for the new owners - at least nothing shows in the way of patching to the roof or repairs as I drive by there on that former street. I might add though, that DH was getting tired (and of an age) where he didn't want to keep climbing up on the roof to wash them and they seemed to need it at least three times a year in this stormy climate.

Make sure you get it tinted against glare

"he didn't want to keep climbing up on the roof to wash them"

My daughter had skylights in her house in the woods. Over time she learned to just not look up.

Thanks again for the comments!

not sure if your lot is heavily treed but its good to avoid a skylight under a dirty tree (one that drops a lot of leaves, fruits, cones, etc)