It's a 1-bedroom apartment in the Vucciria neighborhood (well, lively and not very family friendly - do your proper research about this neighbourhood). I feel that the value for money wasn't good enough. Please take paying 15 EUR/day for parking into account.
Entering the apartment is quite convoluted. You need to open 3 doors for the building with 3 different keys until getting to the actual apartment.
Once you're in there, you will notice a poignant smell that is very hard to ignore. It has a nice terrace that you can use when it's not raining. The bed is really uncomfortable, we ended up sleeping on the sofa which was a bit better.
Silvia was a very nice and helpful host. She helped us park in a safe place in the first day and communicated with us in a very timely manner through AirBnB. She speaks some English which was very helpful.