The apartment might be fine for you if you don't run into any issues. If you do, expect to deal with a very petty and rude host. The apartment is not in any way worth having to risk dealing with that man, even if his staff are friendly.
Let's start with the incident, then the apartment itself.
We booked a long stay at Rodolfo's apartment. Within a few days of staying there, we were burglarized while sleeping. We were in the bottom floor/basement (more on that below), and the thief or thieves came in and got out without us knowing until later that morning when I started to realize things were missing. They made out with a backpack which contained our camera, some headphones, work laptops and cash from my wallet. We did not feel safe staying at the apartment, so we decided to check out, and found a hotel for a couple of nights before finally finding another place last minute. We spent a day between two carabinieri stations trying to make a report with police that didn't speak any English. Not fun, as you may imagine.
OK, so things like this can happen, especially to tourists. I wouldn't necessarily hold random burglary against the host, but... The issue came when we tried to work out some sort of refund for the nights we did not stay at the apartment (several weeks). This is when Rodolfo showed his true colors. He spent hours questioning us about what happened, demanded a police report, and we even sent him a video of the window not locking fully upstairs. He refused to refund any amount, and went as far as to claim that we invented the robbery. He became eerily defensive about the whole situation, picking at every (poorly translated) detail in the police report, and has shown not even a shred of decency or sympathy. Instead, he decided to make things harder for us and refuted every last point with the booking service.
Not only did we waste an entire day of our trip at the police station, but we had to cut our trip short (due to not having work computers) and move twice to more expensive stays (based on limited availability of last-minute stays). And while we found a wonderful place to stay eventually, it ended up being between 45-60 minutes away from the city center by Bus. Despite having nothing to gain, and a lot to lose from the whole situation, Rodolfo is adamant that we made the whole thing up.
In hindsight, this isn't surprising. Go and read any of his responses to reviews on popular booking sites. Look at how rude and petty he gets about 4 star reviews or even 5 star reviews that are less than glowing. You really don't need something like that while you're on a trip, this place isn't worth dealing with Rodolfo. I wouldn't be surprised if he responds here to refute this review.
As for the apartment itself, what you see is what you get. Yeah, it's in a good location, and yea, it's old (as are most buildings in the city center). One thing that may not be obvious is that even though you enter at street level and it's technically 3 stories (2 + a converted basement), you have people above you as well. I don't know if we got unlucky or what, but there was a ton of noise coming from the upstairs neighbors. In addition to that, you get quite a bit of foot traffic next to the apartment, and you will hear all the conversations of drunken passers-by. This is the reason we decided to sleep in the basement as we tried to get over our jetlag, which is likely why thieves felt emboldened enough to try their luck.
Wifi downstairs did not work for more than 5 minutes. The host's housekeeper showed up the morning after we reported this to confirm that it did not work, but we never really got to any resolution because we realized later that same morning that we had been robbed.
The apartment is in a central location, and you are walking distance to most tourist points of interest. Try and find a place near this one if you can, but stay as far away from any of Rodolfo's apartments as you can.