This is more of a recreational ship than a station, but...
It's called the Blue Tail Hotel, blue tail referring to one of the tails of a comet.
It's a single launch station and can hold 99 Kerbals.
My biggest ship that I've gotten into orbit so far is my "Blue Tail Hotel", blue tail referring to one of the tails of a comet.
The craft stats are:
Parts: 344
Mass: 708.500t
Height: 47.3m
Width and Length: 14.7m
Capacity: 99 Kerbals