A spokesman for the China National Tourism Administration said the actions of hotel chain APA Group were "an open provocation to Chinese tourists."
"We demand that all operators with international tours and online platforms completely stop all cooperation with this hotel," Zhang said.
He also urged Chinese tourists already in Japan to boycott the chain as well.
APA told CNN in an email that it was surprised about the "sudden fuss" regarding the book but has no intention to change its policy or remove the books
"The cancellation from the Chinese customers apparently happening, but as we have reservations for other customers. There is no big impact for us," APA said.
In a statement last week
, APA defended its placement of the book -- written by CEO Toshio Motoya -- on the grounds of freedom of expression.
"Although we acknowledge that historic interpretation and education vary among nations, please clearly understand that the book is not aimed to criticize any specific state or nation, but for the purpose of letting readers learn the fact-based true interpretation of modern history," the chain said.
An estimated 300,000 people died during the Nanjing Massacre
-- a weeks-long spree of mass killings, rape and looting after the Japanese military occupied Nanjing in late 1937 and 1938.
The book claims that figure is "absurd" and argues that the incident was "fabricated by the Chinese side and did not actually happen."
The Nanjing Massacre is well-documented. It was discussed in the Tokyo War Crimes trials following WWII, and in 2015 documents related to the incident were added to UNESCO's Memory of the World Register.
APA did not respond to a request for comment on the