The subsection of the Georgi Gospodinov novel runs like this:

The Shortest Novel About Odysseus After His Return Home

One night, now old and flabby and starting to forget, he leaves his home secretly. He’s sick of everything, so he heads back one last time to see the places, women, and wonders he had once encountered. To go back again into his draimed memory to see how it had been and who he had been. Because thanks to the bitter irony of old age, he has begun to transform into the Nobody, the name he had once cleverly used when introducing himself to the Cyclops.

Telemachus finds him in the evening, collapsed by the boat, only a hundred yards from home, with no idea what he is doing there and where he had been heading.

They take him back to a house with some woman he no longer remembers.

The novel is Time Shelter, and the premise is that refuges are built for people with Alzheimer’s, reflecting life from past decades, for instance the 1960s.  But then people from the present start wanting to live in them.