Casanova's attention was especially attracted by a broken window in the first story.

Nor did it escape his notice that the battlements of the squat tower were crumbling in places.
But the house door was gracefully carved; and directly he entered the hall it was plain that the interior was carefully kept, and was certainly in far better condition than might have been supposed from the outward aspect.
"Amalia," shouted Olivo, so loudly that the vaulted ceiling rang.

"Come down as quickly as you can! I have brought a friend home with me, an old friend whom you'll be delighted to see!" Amalia had already appeared on the stairs, although to most of those who had just come out of the glaring sunlight she was invisible in the twilit interior.

Casanova, whose keen vision enabled him to see well even in the dark, had noted her presence sooner than Olivo.

He smiled, and was aware that the smile made him look younger.