We were in 7 people (including 1 toddler) and we could easily fit in the house. Good working wifi connection. From the house we could easily go by car to Taormina, Etna, Syrakusa, Noto, Modica, Caltagirone - we could visit the whole area so this is a good spot to visit the east part of the island.
However, there is no heating so this could be a problem if you visit in November (or in winter time) like we did. Also for 7 people there were shortages of hot water. We had a big car (a minivan) which we had to park outside the place. So we would rather recommend the place for smaller groups.
The host visits the house every day (removes the garbage and opens windows to get some fresh air into the house) - it is an advantage (you could ask him whatever you want) but could be also a disadvantage (less privacy).