I would give it an 8/10 because this show is very clear about what it tries to do, and it succeeds.
My first impression during episode one was "Ok, I get it, pretty neat but there's no way I'm watching more than one episode of this"
How can it be interesting to repeat the same premise over and over? They achieved it somehow.
The more I watch these kinds of shows the more I appreciate the creative challenge behind them. To completely ditch the "Hero's Journey" playbook of writing.
Where thrillers try to be thrilling, horror tries to be shocking, drama tries to be moving, etc.. This show tries to be endearing, and it succeeds.
The character designs are understated but very cute.
The voice performances are committed.
And the events will leave you with a warm feeling of appreciation of the simple things in life.
Whatever it is you have going on, you're probably not locked up in the dungeon of a demon castle. So if Hime gets to enjoy herself there, you can enjoy yourself as well. By watching an anime perhaps, and eating some microwaved cup noodles.
In that way, this kind of show ends up being much more profound than it tries to be.
I refuse to underestimate how difficult it must be to take such a simple idea, and somehow repeat it 20 times throughout an entire season of anime.