In early September last year we spent five nights in Verona. The castle & bridge were great. My husband went to an opera in the Arena & loved that. We really, really enjoyed the sculptures around the entry door of the Basilica of San Zeno & even more the cast metal (bronze, I think?) doors inside. Also the church of San Fermo, especially the wooden ceiling.
As for walking around in Verona, we love walking around anywhere in Italy, but we discovered that we preferred other smaller and more medieval towns in the Veneto for wandering around in. The whole area around Juliet's completely fake balcony was a zoo & we avoided it. However, it is hilarious to watch people visiting the balcony & fondling the statue on: https://www.skylinewebcams.com/en/webcam/italia/veneto/verona/balcone-giulietta-romeo.html
Enjoyed eating at:
La Taverna di Via Stella
Osteria il Ciottolo
Trattoria al Pompiere
Osteria Il Bertoldo
Then nine nights in Padua and we felt like if we had to choose a town in Italy to LIVE in, Padua could be it.
Scrovegni Chapel --- I had been there almost exactly 50 years before when you could just walk in. Now you book for your 15 minutes in a dehumidifying room with about a dozen other people, & then 15 minutes in the chapel. We did that once and then booked again for an evening double visit, so we could spend a total of 45 minutes in the chapel. Well worth the time & trouble.
Three large & wonderful piazze. Lots of fun all evening, very lively. Plenty of bus stops for bus trips to other parts of the city or to & from the train station.
For places to eat, we really liked Osteria dal Capo & Osteria A Banda Del Buso.
It is fun to eat at a very busy hole-in-the-wall street food place called Bigoi Padova for the thick, extruded pasta called bigoli --- that's all they sell, with whatever sauce you want on it, and you eat it just standing up or else sitting on steps or on a curb outside.
We had excellent hamburgers at Soul Kitchen & watched Italians eat hamburgers on buns with a fork & knife, cutting off slices. Or they leave in the giant central toothpick that holds the burger & its toppings together, & eat around the toothpick until there is just one bite left. We ate ours American style. In our hands.
Our favorite gelato was at Gelateria Gnam Gnam in the Piazza dei Signori --- there are about five gelato places on this piazza. The caffe was especially good, with tiny bits of coffee beans in it.
Many things to do in Padova:
https://mycornerofitaly.com/category/where-to-go/veneto/padua/
http://www.padovamedievale.it/
https://rossiwrites.com/italy/veneto/padua-italy-reasons-visit/
Day trips from Padova:
http://rossiwrites.com/italy/day-trips-italy/day-trips-from-padua-italy/
Then we stayed in the historical center of Treviso for six nights. It feels like a small town unless you walk into the newer sections. Many streets in the lovely old part of Treviso are either pedestrian-only (often narrow and porticoed) or have so little traffic they are usually full of people walking. This makes Treviso a wonderfully relaxing town to be in. Many buildings have frescoed walls & look quite Venetian. There are small canals and bridges & there were flowers everywhere. Several museums & churches containing the late medieval/early Renaissance art we like best. You can take a walk on top of the encircling walls, too.
Cittadella --- you can walk all the way around on top of the town walls.
Chioggia --- we’d previously spent two weeks in Venice and so didn’t visit it on this trip, but we did enjoy taking the train from Padua to Venice, then a vaporetto down the Grand Canal and then all the way to the Lido, then a variety of transportation to Chioggia. And back again. It took all day and we had a great meal in Chioggia but otherwise were not fond of the town.
Soave & Valdobbiadene --- it’s just fun to drink wine surrounded by the vineyards it comes from.