Could anyone tell me if my Landlady discussing terms of my lease with any of my guests is any sort of violation of privacy or otherwise? Thank you.

Yes, but its not illegal.

Ok thank you very much.

Yes, some large apartments have lists of who live their listed on a board. While they should not give out private info as to your lease, unless one of the terms of the lease is that it has to be private, they are free to do so