An important ring was stolen in the room.

An important ring was stolen in the room.
I suspected the housekeeper had been stolen and contacted the front desk.
I was about to return, so I asked the Japanese staff for contact information, and I checked it there
The reply was very slow, and the reply I received was "I will contact you if I found it", but I could not find it properly.
It is only housekeeper's work that the ring that was in the room disappears, so it is very disappointing that it may come out if you ask it properly.

If I was sleeping in the room on the day of check-out, the house keeper suddenly entered the room and was surprised. Is it normal to come in immediately before check-out time?
All that is impossible for a luxury hotel.