It’s a cute slice-of-life-like take on Isekai. Probably not what the genre’s fans would normally enjoy but it’s not terrible.
Pacing is good, storyline makes sense, author writes about what they know so there aren’t any embarrassing realism gaps, some minor fan service.
My only guess is isekai is normally enjoyed as a “self-insert”, which is a hit to their ego in this case.
Like. What do you want? Panty shots, beach episodes, mouth breathing over an epic quest to find RICE, a video game overlay/elements, sexualization of the infant, skill stealing, slaves?
Is that what makes a good isekai? I’ve got a shark you can jump over.