I think an apartment in general is a bad idea. Not that I would take my own advice but be very careful. I think many lease agreements state that maintenance can enter anytime or 24 hours notice... or whatever, "Im not really sure" just be careful. Even if you are legit, safe, yada yada better to be safe than sorry. Check the rules regarding entering while you are not home. Sorry, this was not really a direct answer to any of your questions but it IS what I was thinking while reading your post. Be safe and have fun