It is a refurbished shed, but dont be put off - it was warm with the heating on and while we did not use it, kitchenette comes with cutlery and similar and there was coffee available. Amenities are on a level of budget hotels.
Location is amazing. Really close walk to st pancras and kings cross stations.
It was also very handy, that we could leave our luggage in the peoperty after check out as our flight was later in the evening and we could enjoy London unburdened!
The only negative thing was that we felt a bit rushed in the morning, an hour before check out.
I do recommend the place, it is more spacious than photos suggest.