An apartment in a building without an elevator.
1So long as they were in a walk-up apartment, Alice put off her socialite yearnings.
2The kid is five now, and she's living in some miserable walk-up apartment on the West Side.
3In "Julie & Julia," Amy Adams' character understandably struggles to master the art of French cooking in her cramped New York walk-up apartment.
4They are not cheap to build unless they're low-rise walk-up apartments.
5"You don't want to buy a Cadillac, and you live in a walk-up apartment," Alice said.