In all honesty, Martha would rather eat at home--there are plenty of great restaurants in London, but no one makes quite the same combination of Tibetan, Indian, Turkish, and English foods as Tharkay. Not at the same meal, anyway. But 'home' is too far to drop by outside holidays, so if she's tired of making dinner, restaurants have to do. "All right. I think they're a few floors up. I wonder where the stairs are..." They can try an elevator after the poor man's had something to eat.