I went there (wallingford) with my husband a while ago and was not impressed. For such a big place it seemed they took no care in the interior design. I felt like I was in a school cafeteria, complete with the screaming children running around. I wished they had put up some drapery or curtains to absorb some of the sound and make it feel more cozy.
As for the food, my husband is Italian, and was not completely enamored with the food. You can get a better, more authentic pizza at Zagi's in ballard, and it is cheaper. I don't think I will go back to Tutta Bella, that is until I have 5 screaming children to tote along with me. Definitely do not go there if you are looking for a romantic spot. But, it is a family friendly place if that's what you require.