Oh this is a thread I can keep adding to...
Everything Agatha Christie ever wrote is a good start. Nothing like a good Poirot or Marple in the middle of winter.
Also Anne of Green Gables. A classic.
SciFi? Currently A Long Way to a Small Angry Planet by Becl Chambers. It just hits right.
YA? Small Spaces by Sarah Epstein. Everyone really slept on this one. Aussie author too.