I couldn’t find it I have to say. You may need to call them.
LSZG (Grenchen) has a very nice hotel just by the ‘terminal’. You can even overlook the apron and your parked plane from the rooms. Highly appreciated! And it also has a nice restaurant on first floor with an outside terrace for al fresco dining in the summer. I highly recommend it for an overnight stay! It was a couple of years ago now I stayed there (diversion due to TSs all over) so my Pirep is slighly dated.
need to call them
I did, and while the pizzeria is open, the hotel is not (at Reims)