I-C Zurich is the former Nova Park and should NOT be compared with the Widder!

I haven't stayed at the Widder, but have heard only good reports about this boutique hotel. Also (to be fair!), I have not stayed at the I-C since it became an I-C, though I feel it would have needed an investment of millions to upgrade to I-C standards.

Also, the I-C is somewhat off-central at Albisriederplatz (an easy tram ride, though), while the Widder could hardly be more central, at Rennweg off the Bahnhofstrasse.