"Rack of lamb for lunch, great staff, busy with locals on their lunch break."
"Of course the architecture and design is incredible. If you don't have a reservation go on a different language tour."
"Go during lunch for the daily menu."
"If you don't book in advance, go anyway! Worst case-you can tour the garden. Best case-you may be able to join a different language tour and use the printed descriptions as you tour the house."