gosh this was adorable and has...just a TON of elements from pop culture in my childhood.
Neglectful guardian aunt & uncle
Vague blurry memory of parents death
Inexplicably sent to magical place
Makes friends with smarty pants
Weird kinda sketchy Headmaster--I mean...Hotel Director that watches from a distance and helps when needed.
Random magic around Hogwart--I mean...hotel
*stares in Harry Potter*

I really loved the two kids. They're curious and smart and kinda odd balls with kids their own age but find this home at the hotel with these fellow weird adults. The mystery itself was actually a bit more dark than I was expecting. I loved the concept of the Winterhouse hotel a lot. I'm curious how they're going to flesh that out over the next couple books.