1. Clean the bed. Cleaning usually means looking inside yourself. The bottom of the bed represents the most private but important place of a person's personality.
2. Generally speaking, scissors are the termination of the relationship. Finding scissors under the bed can also make you feel insecure. Maybe the landlord is aware of any potential danger. But what is the specific meaning needs the landlord to think for himself.
PS: No communication, look at it dialectically.