Winterhouse by Ben Guterson illustrated by Chloe Bristol

When Elizabeth arrives home from school, she finds a note from her cruel aunt and uncle stating that she is spend Christmas vacation at the Winterhouse Hotel.  Mysterious encounters begin on the bus ride to the hotel.  The three weeks at Winterhouse Hotel overflow with mysteries, word puzzles, and new friendships.  Elizabeth begins understand more about her past and discovers her own magical powers.
Exciting and entertaining!
The plot/characters vaguely remind me of Harry Potter.
I really liked the cutaway windows revealing the different characters on the book cover.
Warnings: magic, characters try to revive an evil person, spirits
Each chapter title includes a word ladder.
Sequel: The Secrets of Winterhouse (The third one of the trilogy will be published late 2019-The Winterhouse Mysteries)
-Borrowed from the library.