It is, in fact, the same "Italian place" (formerly called Ristorante Toscana). Same people, same Italian dinner menu, they just changed the name and broadened the lunch menu. (So there shouldn't actually be many "start-up issues.")
It's the third name change within a relatively short interval, leaving me wondering how long the same people have used this space, i.e. how many names the current restaurant has had. I wish them luck because, again, I found a recent meal under the "Toscana" name well executed and a decent value.
I have to say that's amazing. A few weeks ago, 300 Castro was [Ristorante] Toscana; until a few months earlier, the same business was labeled Bella Vita (and if I remember what they said when I asked, it was connected to the Bella Vita in downtown Los Altos). Earlier at same address was Diyar Bistro & Wine Bar.
I tried Toscana for lunch at the time (a few weeks ago) and was impressed and encouraged by the upscale northern-Italian dishes tasted (and others I heard about from other diners). But relatively few locals seemed to know about the place, it had a low profile and may not have done enough to "market" itself (a situation that was the demise of more than one past restaurant thereabouts).
Would also like to hear about the new place, especially if (or after) it has been open a month or two to get past any start-up issues.