We found the apartment to be in a decent location relatively close to key locations but still enough off of the main tourist routes as to be a bit quieter and less hectic. The apartment backs onto one of the canals, which gives you a bit more of the Venice feel.
It is quite small for the two of us who stayed there - the bed is quite small for two people and we found that we didn’t sleep as well as we could have given the issues with space in the bed.
It should be noted that, not shown in the pictures on Airbnb, that there is a rather large AC unit mounted on the wall at the head of the bed. It is probably good that the place has AC (although we didn’t have cause to use it really), however it makes a material difference to the aesthetic of the apartment and so probably should be included in the pictures. This means you can’t really sit up in bed if you sleep in that orientation. We didn’t feel comfortable sleeping with our heads directly under a heavy piece of equipment and so slept at the other end of the bed - which with no headboard is not ideal.
We also found the apartment to be quite a bit darker during the day in general than the pictures suggest. In addition, one of the two lights was not working which made the place even darker at night and actually quite difficult to see properly at times. This issue seems to appear in several other reviews also.
Overall I probably wouldn’t describe as ‘romantic’ but the location was decent.