This restaurant received it's rating based on the quality and price (overall value) compared to the other gastronomy establishments in Sion. You're getting pretty decent food for a good price.
There are a few pasta selections, but the restaurant specializes in pizza mostly. The pizza appears to be cooked in a stone oven and served fresh. There are two sizes (based on the menu); the larger size is probably 2/3's larger than your average personal pie pizza. It was not the best pizza I've ever eaten, but served it's purpose in satisfying our hunger. We also had penne pasta (in bolognaise sauce) along with this meal and it was pretty decent.
The service was great; the waitress was friendly and was able to understand what we wanted (she did not speak a bit of English at all). During our meal, the owner came by and shook our hands and asked us about our meal and day (you don't get this quite often nowadays).
P.S. If you're driving, there's decent sized private lot for the restaurant. read more