Second door in apartment, really necessary?

I've seen apartments where the second door has been covered but is still technically functional, apparently in order to keep up to code. On an unrelated note, you might really want to consider keeping that kitchen entrance, especially if the building's garbage collection bins are easily accessible from it. It's great to be able to easily take the trash from kitchen to garbage can without having to schlep it through the apartment. Also helpful having that second door when you are bringing in a ton of groceries. Just something to think about :-)

Does the stairwell off the kitchen door contain a fire hose or hose connection? If so, you may not be permitted to block or remove it, as that's where firemen would get their water.