Yeah it's not that bad. If you spent a lot more time in there just brainstorming stuff to add, you could make it look pretty sweet. Add details like handrails and pipes and trash and stuff.
What's really making it bland is the color. Color different logical groups with different colors that stand out to each other. Like for example, paint the bars dark grey, maybe paint the walls a darker brown, and then leave the lighter grey for details like pipework