It's the only vegetarian restaurant in Naples I know of, so they deserve some extra credit.
That said I've been there four times the last few months and had mixed experiences. They follow the standard Italian way of having dinner: antipasti, primo (pasta or rice or soup), secondo (fake meat) + contorno (vegetable side dish).
It appears to be a hit+miss, once I had an extremely bland risotto and some seitan-dish al limone which was mostly drenched in oil and I couldn't even taste a hint of lemon. Last time though, with the pasta dish and two contorni it was very good.
Updated from previous review on Thursday April 10, 2014
Cons: Food can be bland