I live in an apartment too , most of my neighbors are young urbanite millennials with dogs .
Charming young ladies but most had never even seen a real gun and would react fearfully .
My business is my own so I prefer to be very discreet .
For shorter guns I use a back soft- sided guitar case with a carry strap that I got at a pawn shop .
It's better quality than any similar gun case i've owned .
My longer guns all have canvas covers that TOTW sells ,so those I roll up on a thin rug and rope tie. I have also used long skinny cardboard ULINE gun shipping boxes. Slide the canvas cased gun in and off you go . People are moving in or out all the time .
You are right to be concerned .While you are perfectly within your rights, its best to anticipate worst case scenarios and act to avoid them .It's not the world we grew up in ,but the one in which we live now .