Definitely Lucerne.... Zurich would be second choice and Basel last about 6 years ago
What is the most cost effect way to travel from Zurich to Venice with a stop over at Otzi, the Iceman museum in Bolzano,ITAly?
Train would be the best option. We tool a train via Rome so that we could spend a couple of days in Rome encounters to Venice about 6 years ago
Zurich city especially the old part is at least a day and would just walk around. Start from the railway station HBF and walk the old streets and church areas. There are many restaurants tucked quietly away on side streets. You can spend more than a day mooing this. about 6 years ago