Neighbor keeps putting baby stroller in front of my door and stairs

I just moved into a 4 story building in Manhattan and my neighbor keeps leaving their baby stroller by my door. My door is also next to a staircase and they literally park it front of the stairs, blocking access. Granted, the stairs go up to the roof so no one uses them but it's still annoying and technically a fire hazard. I've moved it several times already. Normally I would talk to them about it but they seem to not speak English. Is this even worth bringing up to the landlord? Has anyone else had a similar experience? How did it get resolved?

Before anyone suggests mischief, there are security cameras in the hallway.