What a charming and quaint idea - a hotel with a main section for regular guests, and a separate section for criminals & catering specifically to criminal activity. You simply have to pick up the phone to order weapons, poison, counterfeit notes, etc. But not drugs - that's where they draw the line, they want lucid people who don't hide behind the excuse of behaviour modifying drugs.
There are also 2 basic rules: 1. Do not cause damage to the hotel property 2. Murder within the hotel is punishable by death - an eye for an eye in a just penalty. Your corpse would be disposed of in the inhouse incinerator.
And so we are introduced to the protagonist, an elite killer who has a job as a hotel detective. Her job is to investigate impossible locked room crimes which the Japanese are obsessed with, and to deliver justice.
Quite an interesting read, I would love to read more stories set in this hotel. Fair warning though, the execution is not that sophisticated, at times it's not written that well, but might be due to translation rather than original work.
This entire review has been hidden because of spoilers.