A few years ago, we (2 adults & 2 kids) stayed @ Swissotel. As we got the upgrade from standard room, the beds were big enough for us. The location of this hotel is very convenient as it is on top of the railway station to airport.
Stay at Swissotel last time - 2 adult 2 children. the room is big enough, and we requested twin bed room as if you put 2 bed together is bigger than King bed