This was asked of me by a friend, and I've been unable to help her, and it was suggested I try this forum - if anyone can place it, I'm sure she would be very grateful. Thank you!

Her description was -

I'm trying to track down a compilation of sci-fi short stories I must have read in the late 1970s:

One of the stories ( I'm leaving out some of the fruitier details ) involved a young couple getting together and renting a nuclear shelter from a middle aged lady as their home.

After a couple of days the alarm went off indicating a nuclear strike and they hunkered down for a long wait, wondering what might be left of the world they knew.

Gradually the cockroaches moved in and things became unbearable and they eventually began arguing; the young woman wanting to leave the shelter and take her chance above, the young man refusing to, and while the woman tried to open the hatch, he struggled with her and she hit her head and died.

It took the woman who owned the shelter a while to rid the place of cockroaches "this time", but having done so, she put up the "To Let" sign once more....... (gulp!)