I got a stack of sci-fi books when I was a kid, around 1982. Some I remember: Childhood's End, World Out of Time, Venus on the Half Shell. But I’ve forgotten this one, about a kid who goes into some sort of space training program.
One of the things I remember clearly is the description of his quarters, similar to those Japanese shelf hotels. It was a very isolated description, which never left me. I also believe there was a love interest, perhaps an alien woman.
It wasn’t a YA novel nor was it space academy or anything like that. I don’t think it was a “popular” author but it could have been. It also might have been in a book of short stories because I had a few of those but I think it was a full length novel.
For some reason I remember a blue cover, but I could be wrong. I’ve looked at so many lists and book covers over the past few months trying to jog my memory, but so far I can't recall.
I would love to find this book.