There is an outside and inside gondola. Different pricing. Both are ultra romantic. You usually join other couples or gamble and hope you and the gondolier are it.
We gambled and got the gondolier to ourselves. Ride and experience was good. Long enough to enjoy the moment. The singing was truly authentic and a replicates the real experience in Italy well.
Have to do this at least once. Will have to try to real ones with Italy.