The first day in Lugano is the lakeside day of course, here are some impressions of a lake that always seems to hide in the fog, adding a surreal beauty to an anyways ridiculous beautiful scene.
To me the best time for a walk on the lakeside is either in the early mornings or late evenings, having random breaks on one of the benches and finding yourself in a talk with a stranger. Many of the elder residents of Lugano like to sit there in the mornings and they can tell you many stories about Lugano and the lakes.
In the evening you may have dinner in one of the Restaurants close to the Piazza Riforma. My recommendation is Ristorante La Tinera (Via dei Gorini 2, 6900 Lugano). Very good food, maybe one or two Swiss Franken more than the other places, but worth it. I suggest making a reservation because it is always very busy.