TheFork users who ate in Ancona have said really good things about Ginevra Restaurant, Osteria la bottega di pinocchio and Love Caffe' Centrale. Maybe you should give them a try!
Some of the more popular Seminar restaurants well suited for a business lunch in Ancona according to TheFork users include:
Ginevra Restaurant, with a 9.2 rating
Osteria la bottega di pinocchio, with a 8.7 rating
La Tartaruga, with a 8.9 rating