Here are a few perparatory studies of a the possible look for the abandoned room.
My opinion on the extreme plantlife is maybe I should cut it back a bit. What I want from the plants is a sense of timescale of how long the room has been in this state, but they also imply theres a lot of plantlife already in the area. If the area was Hashima Island for example where there isnt much visable plantlife, how do I achieve the vast timescale. This I will look into. I do like the plants blocking the lit and giving a haze but this much seems to be more jungle than an uninhabbitated city.