garden apartment

noun3

1. •
   An urban apartment in a multistory building located at or below ground level.

   • "Because you're in the basement living in a garden apartment, when people are moving around upstairs, you can hear it. You wake up, look around, and realize it's someone above you," he said. — 2003
2. •
   One of a set of low-rise apartment buildings built among landscaped grounds and often arranged around courtyards that are open at one end.
3. •
   A detached mother-in-law apartment or cottage on the same parcel as the main house.