Silvana very kindly came to meet me at the port to show me the accommodation, which was only a couple of minutes away but until getting used to to the little streets this help was much appreciated! Silvana did the check in with me in Italian but she does speak much better English than my pretty much non existant Italian, if you aren't able to follow (everything is very self explanatory though).
The location is great, very close to the port and the hydrofoil/ferry ticket office as well as the little shops and restaurants in the area. You can find Silvana's place without a flashlight but if you are venturing further out of the town e.g. towards the Ficogrande beach or especially up the mountain st night I'd recommend bringing a flashlight as not all the areas are as well lit as San Vincenzo. You can also rent headlamps from various places for more serious night hikes.
The accommodation is very pleasant, quite traditional in a way that gives you a different experience than just going to a hotel, which is something i really like about Airbnb. There is an ensuite, kitchenette and covered outdoor space. The ensuite has a wet room style shower and I had plenty of hot water, v. important after a lot of hiking. The bed was quite firm, not an issue for me but just mentioning for info for future guests.
Silvana also let me keep my luggage at the accommodation past check out and offered to host me an extra night when bad weather meant my hydrofoil was cancelled.