Thanks for sending in another photo.
The bending you are referring to is lens distortion. This can be removed easily with some post processing software such as adobe lightrooom.
In terms of the noise in the image if your camera is set on an automatic setting it will increase the ISO in low light situations. This increases the sensitivity of your camera’s sensor thus allowing it to capture more light and also adding noise. adobe lightrooom also does great noise reduction but a better solution is to take control over the ISO setting.
Especially in this case because you can get away with shooting a non-moving/static scene like this at very low ISO.
Your best bet for a short like this is to shoot at the lowest ISO possible and use a tripod.
I’m curious as to why, in such a symmetrical image, did you choose to leave one door open?
Thanks!