I turn to TV in these situations much more than film but I'd guess it'd be
1. Any Miyazaki, but especially the low-stakes ones like Totoro and Kiki
2. Inside Llewyn Davis, which sounds weird but I love the mood of it and I did rewatch it on a whim while sick once
3. Le fabuleux destin d'Amélie Poulain/Amelie
4. Maybe the Harry Potter movies ? I don't really love them though, aside from Azkaban, and I'm way too anal to just watch that alone.