I stayed in the hotel adjacent to the station, so I went and explore. This is not only a train station, but also Piece of history and an example of a nice combinations historical building with new modern extensions. You can find a lot of shops, restaurants and fast food places here.
It is also very close to King’s Cross station. Marriott St Pancras Renaissance hotel is connected to / part of this historical building.
Eurostar trains, as well as connections to couple London airports (Gatwick, Luton) are departing from here.