We (2 adults and a 9 month old baby) stayed here for 4 nights and 3 and a half days in early June.
Per the ad, it really is a great location if you are walking lots and taking public transit. That said, the downside to being right next to a train station, is being right next to a train station :)
We found the noise of the trains on the track and the train horns all night long to be quite loud, even with the windows closed. But if you're used to that degree of noise then its probably fine or is you're only staying a couple nights it's probably ok.
Although we had difficulty with the person in charge of check-in, in Francesco's absence, (we messaged her per instructions but never heard back from her), Francesco was quick to respond (via WhatsApp) and helped us get in to the apartment (by providing the code for the lock box that the other person was supposed to provide).
Also, despite the fact that the apartment had not been cleaned since the previous guests had left (another error on the part of the person managing the apartment in Francesco's absence) and we were quite disappointed by this, Francesco worked with us to find a solution and agreed to a fair partial refund to compensate for the situation.
We really enjoyed the weekday food market on the street below - so many wonderful options!
One thing that would have been helpful was a fan in the apartment as it was very warm weather during our stay.