As the title says, Welcome to Japan, Miss Elf! It's an anime about how an elf and later a dragon get to Japan (it should be called, Welcome to another world, Mr. Japanese). Except that instead of showing her/them the beauties of Japan, they return night after night to the same isekai world where they met. They literally spend more time there than on the streets of Japan. So instead of the expected walks around the city and trips around Japan, I'm watching fantasy again, which is more than enough this season. And the few ep. when they have "free time" is simply not enough. And the "trip" to the hot springs in ep. 8 seems like a sloppy topic to me, as if there were no other options than just the spa.
Finally, yes, the idea is interesting, but not fully realized. It reminds me of a sweet reincarnation that ended the same way, and instead of baking sweets and cakes, everything else was dealt with. for me 6/10