I enjoyed walking on the canal and watching the gondolas in the Venetian Hotel. It's a lovely place to go to relax after the being on the loud and busy Las Vegas Blvd.
I've been there, too. There are some nice things to do in Las Vegas, such as Cirque de Soleil, the Bellagio fountains, the Egyptian pyramid and Paris. I had a nice time with my daughter back when she was in middle school and competed in a gymnastics meet there. It's not all sin city! Have a nice time!