Went last year with my (then) LS430 and did park downtown right by the canals.
It was fun, but I had to park overnight in a garage and the charge was 50 EUR. I live in Zurich, and I found THAT to be way too expensive.
Other than that, it's always nice driving cars in places where they're not "supposed" to be. I used to daily a 7er in downtown Athens when I was studying there. Streetside parking made a man out of me and taught me to properly park