amazing and incredible work, the only thing it miss is the smell of venice.
The only thing it is not realistic in my opinion(but still well modeled) are the windows shutters on the right, in venice it is very rare to find the kind you used there , the venetian way of dealing the thing is the one on the left and in the center.
another unusual thing is the terrace, due to the very little space they had in the city, Venetian Terraces are usually built on therooftop:
exept that it really gives you the atmosphere of the city, very well done
This is truly awesome, keep up the good work!
Truly an outstanding job in every respect. I really think it should be gallery bound in many ways.
The only thing that throws me off a little is the gondola in the forground seems to be almost raised above the water. Perhaps it is the camera perspective.
For me at first look your picture seems to be a real photo… I really admire an effect you have reached. Congrats!
Thanks for all the comments.
@sheepHD I changed it back 
@josef in the beginning the goal was an realistic look, but the most importent thing was that it looks good
@zha thanks for your feedback. I will keep this in mind, for my next venice scene.
@harleynut97 Thanks for your feedback and yes it is the camera perspective.
Final version:
Thanks for all the great feedback.
incredible! great job!