Yes, I think any visitors will be unsure if they are in my office or if it has turned into the owlry.
Thank you for taking the time out of your busy day to write to me. I am well aware of the dangers that are to be encountered every which way we look.
Your concern is worth noting, but I have no plans to close down Hogwarts. Not only is it worth keeping open for the educational purposes that are so very important, but Hogwarts represents far more than O.W.Ls and N.E.W.T.s. In closing Hogwarts we gamble more than just safety -- We risk hope, we admit that a future worth striving for might only come to us by chance, and that we all might as well give up.
Hogwarts will never close its doors.
Sincerely, Albus Percival Wulfric Brian Dumbledore