Our stay in Venice was great, what a beautiful city! Andrea's place, while nice and clean and well-located, did have a couple of flaws. I would still recommend it, but you should know what to expect.
I suspect that the mattress on the big comfy-looking bed is of relatively high quality, but it's frankly worn out. If you're going to sleep on it alone, just sleep in the middle (as I was forced to do, even though there were two of us), and you'll probably find it very comfortable. With the two of us, however, we felt a bit like we sleeping in hammocks. Our butts sunk into the tired foam, and it was quite uncomfortable. One night I perched myself precariously on the edge, and the next I moved toward the middle, somewhat crowding my partner (thankfully it's a big bed). A comfortable bed is one of my top needs, hence my focus there.
The location is great...once you find it. The building number we were given wasn't accurate (we were given the correct one when it was time for check-in), and the street (actually a very narrow dead-end... something...) was very hard to find. We couldn't find the street name anywhere, and we were advised that it was between two hotels, one of which we never did find, and the other one wasn't easy to find, either. Better directions are absolutely needed.
The washing machine wasn't working correctly, so we ended up with smelly, sopping wet clothes. Hopefully that will be corrected quickly.
At the end of our stay I asked if we could possibly leave a couple of hours late, and was told that no, new guests would be there an hour after our check-out time (this, in spite of the claim that there would be 24 hours between guests, for COVID safety reasons.) We thought we had perhaps left something in the flat, so we went back an hour-and-a-half later, and no one, not even a cleaner, had been there.
So, I imagine the washing machine will be repaired, hopefully the mattress will be replaced, and if the directions can be revamped, this will be a great place.
It's a cool place, the location is great, and the price is reasonable, so I'd say go for it. That mattress, however...