I should have realised that perfectionist Locatelli wouldn't have put his name to anything less than first rate. After all, Locanda Locatelli is the only restaurant, to my recollection, we've ever happily awarded the full five stars. Refettorio should be a model to any chef looking to spread their wings or do the diffusion thing: employ the right staff, use the finest ingredients, make people feel really welcome, and don't stiff them on the bill. Now, that's not too difficult, is it?