It’s a great idea. For single people, the smaller the better in most cases. If I could be sure of adequate noise protection, I’d love to move into one myself. Well, not in SF (I DO have standards). :)
A lot of people in Europe have lived like this for generations.
They just don’t have as much “stuff” as we do.
How many apartments have “adequate” noise protection?
None I have ever lived in. And the cheaper they are the more certain it is they won’t.