Gamla Stan is a station of the Stockholm metro on the Green and Red lines, often falling between Central Station and Slussen - at the moment this station is the only in-accessible station on the metro with the lift currently being out of order, with only large staircases from the platform to ticket hall/exit - which is such a kerfuffle I'd even say if you do struggle with steps, you'd be better off getting off at Slussen and even walking for a few minutes or going one stop on the tram, which pulls right outside the Vapiano, you can see while waiting for a train on the platform.
The station did seem a little dirtier than other stations - it is one of the few on the network which does seem to attract homeless people in certain areas.
I didn't find there to be any staff at the station, which for me during a difficult period with the lift breaking down with no prior notice (you wouldn't know the lift has broken down until you physically get off the train) to be quite poor form as there should be someone or something reminding or informing people of these problems, and helping them get around them without too much delay or distress.
It really does need to fix cleanliness and access and perhaps make Gamla Stan, a fairly central station in Stockholm's metro network, a staffed station.
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