We are a group of 3 married couples in our 50's who will be staying near Marble Arch for 3 nights in early September. We will likely return to the hotel after a day sightseeing and may not have a lot energy to venture very far for dinner that eveing. We're interested in a variety of cuisines and not too expensive. The Union Cafe on Marylebone Lane seemed like it might fit our requirements. Any thoughts on it and any suggestions for other places to consider? I was thinking of places within a 1/2 mile walk or 15 minute underground ride.