Just bought Time Shelter by Georgi Gospodinov. Intend to read it this summer. I read about it in a review and was fascinated by the plot. Here’s the Wikipedia plot description:

The novel follows an unnamed narrator and Gaustine, a psychiatrist who creates a clinic for people with Alzheimer's disease in Zürich. Each floor of the clinic recreates a decade in intricate detail, aiming to transport patients back in time to revisit their memories. Tasked with collecting past artifacts for the clinic, the narrator travels across countries.Soon, healthy people turn to the clinic to flee their monotonous lives and the idea becomes widespread when more clinics open. Referendums are held across Europe to decide which past decade each country should live in, in the future.