Strada, near Rainbow Vegetarian Café, offers fast-food and a family friendly environment.  It is expensive, but it has a 5 out of 5 rating.
[['Strada', 'priceRange', 'more than £30'], ['Strada', 'customer rating', 'high'], ['Strada', 'familyFriendly', 'yes'], ['Strada', 'near', 'Rainbow Vegetarian Café']]