Lots of times renters will just sign a lease and not take the time to read what they are signing. If you still have your lease pull it out and read what is stated.
Here is a good web site to review for renters:
Jerry A. lorenz
HOWEVER depends on relationship with landlord I have impression you personally don't know person.
I am listing agent on property owner and tenant are best friends when we arrives in town for business stays at his home.
In most circumstance NO it can cause major problems.
National Featured Realtor and Consultant, Texas Mortgage Loan Officer, Credit Repair Lecturer
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The obvious answer is that this would be considered an invasion of your privacy unless there are specific terms spelled out in your lease agreement that would allow for this inconvenience.
Our recommendation is to check your lease agreement and than stand up for your rights....your landlord sounds way out of line.