Even in that city, which is the size of a town, two people can walk around without noticing each other!!
Just weird it happens to two a.net users as well!
I completely agree with Banco, you really have
to get away from the "trails". Sure I've been to St. Mark's, the Cathedral, the Palace, Peggy Guggenheim's art collection etc., but the really interesting thing to do is entering those wide avenues *cough* between the houses. Sometimes you can't even spread one arm, it's absolutely fascinating! You get to see little gardens, squares, streets, and most important: not that many tourists. As for tickets, get a "Rolling Venice" Card and hop on and off the boats just as you like it.
I haven't been to Murano, though, our city guide said it wasn't really worth it - I can't judge. But the ~45 minute boat ride to Burano can be so relaxing! Just put your sunglasses on, seat comfortably and enjoy the fresh breeze... Definitely not worse than a short airplane hop!
Don't cry because it's over, smile because it happened.