No lounge access upon arrival.
I suppose you've means to access Schengen, otherwise your stay at ZRH will be a very sad one
Just head out into the city, 7.15pm arrival is early enough to spend couple hours in the city before taking a rest.
The C lounge in E gates (where you arrive/depart from most probably) is the best C lounge for you. It's a reasonable good lounge, but don't expect a great experience (ie, it's much better than what LX offers at TLV, but much less than what you'd get in airports like SIN)