We really enjoyed our stay at Paolo's flat. First of all, the instructions Paolo sent us proactively were very useful to find the door. We had a little issue on the first day but Paolo was very prompt to help and rectify the situation which is great when you're only staying the weekend and have fully booked days.
I thought the flat was very charming, in its architecture. It is not modern but I liked it better this way, as it is authentic and it does make you feel like a true Venician while you are there.
The towels, the sheets, the place itself were very clean. I had feared the place would have a bit of humidity as we were there in January (and being close to the water) but not at all ! It was dry and comfortable. I will totally recommend Paolo's flat to my parents when they come to Venice !