Mario's place is generally ok, well located from the center (reachable in 30mins of walk), and clean. But we had few bad experience as well.
First of all we were aware of the additional tax to pay at our arrival, this was not indicated clearly on the description.
The wifi was not working at all, and we could not even reach any network from outside (kind of a bunker) so we were not able to look for any practical information for our trip.
The use of hot water was very limited, after 15 mins of use it was gone..
Lastly, we were awaken early in the morning by the sound of ventilation coming from outside... Sound isolation wasn't great.