There's a curtain there
This design is just bad though. Why is there 2 beds for 4 people?
Of course I'd assume that the parents would sleep on the floor and the children would sleep in the beds, because if the parents are caring enough to build a bunker to protect their children they'd surely care enough to give them the beds. However, if it's meant for 4 people you still have to wonder why there's only 2 beds.
Also, why is the gun right next to the entrance? Seems like it'd be better to have the gun where it could be reached easily, in case someone tried to enter.
I don't see any food or water being stored.
Where's the vent for carbon dioxide they breathe out? There's a wood stove and a chimney, but no vent for the air.
Nevermind it's fine I don't know why I'm writing shit about a bunker