We have been here for 5 days beginning of October 2020 during the Corona-time. There were very few tourists anyway, so my judgement of the noise might not be accurate.
The apartment is conveniently located inside the old town of Venice and you have plenty of restaurants and shops within walking distance of a couple of minutes.
The check-in: The apartment doesn't belong to a private person. It's a company who takes care of renting it. The employee responsible for the check-in was very friendly. He was waiting inside the apartment and received us very warmly. He was very forthcoming. The hot water wasn't working in the evening when we checked in. But it was fixed the next day. No worries, it can happen.
The apartment: It's located in a very old building and the inside of the flat also quite old. The furniture in general is also old-style (which can be cozy). I guess you can say that this is the charm of such an apartment, and it's might be typical for an old building in Venice. The apartment also has heating and air condition, but we didn't use neither of them.
The kitchen: We didn't use it at all. But it contained everything you need and there was even a box with some basic groceries like oil, vinegar, salt, etc. That’s a nice detail and is very welcome to get started right away with cooking an easy meal on the arrival day.
The bedrooms:
2 bedrooms are very quiet, as they face to a private backyard. The 3rd room facing the street (the street is just 2 meters wide and not highly frequented) might be a little bit noisier in summertime (people talking, etc.). As we were in October, it was chilly at night and we didn't open the windows at night. Hence it was very quiet for sleeping. And there was no annoying noise from outside.
All 3 beds are 1.60 meters wide and are of type "Boxspring" with a thick matrass and very comfortable. Each bedroom has a large cupboard and there is enough surface available to place your belongings. However, 2 doors are broken: One door you can open and close it, but you must slam it, which makes a hell of a noise (very inconvenient at night). The other door gets somehow stuck. You can open and close it, but you need to apply some force.
The bathroom:
It has a large cupboard to store your belongings, which is great. But also, the bathroom door doesn't close just with the handle. You need to use the handle and turn the key to keep it shut. Otherwise it will pop up again. This is not a problem for adults, but it might be for smaller children. Because they need to be able to close the door and turn the key in both directions and they might get stuck inside the bathroom.
But the water (cold and hot) is really a big disappointment.
1.	The cold and hot water have very little pressure
2.	Taking a shower is challenging and requires a lot of patience.
Apart from the pressure (or because of it) there is something wrong with the hot water system. I think they are using a water heater and not a boiler. That means that the heater starts when the water flow is above a certain threshold. If you are below that threshold (which is the case if you have very low pressure), the heater will not start. And hence you have cold water coming out of the hot water tap.
During out stay, opening the hot water tap on the shower wasn't enough to get hot water in the shower. We had to additionally open the hot water tap of the sink. With both taps open, eventually the water in the shower got warm. And because of the very low pressure, the amount of water is very low. Getting a shower and rinsing off the soap is very difficult and slow.
The doors and water pressure problem is something that didn't appear over-night. These are long-term problems and I'm a little bit upset because I think they are not being fixed on purpose and the company might think the tourist arriving to Venice for just a couple of days just need to accept it and live with it.
From my point of view, the problems mentioned above should be fixed. It's not a question of the rental price, it's a question of offering a decent apartment with no such flaws.