This looks good. Add some scuffs, boots, posters, a hat rack with some hats, bulletin boards, speakers, ect. it adds life to the hallway and makes it feel lived in and more realistic.
Hi, you have a lot of real estate on the walls. One thing you could add is a speaker/alarm system in the case of a breach, perhaps above the door or maybe somewhere else. It’s small but I think it could help bring it to life even more!