How do you say how was your sleep in french?

The most common and natural way to say "How was your sleep?" in French is:

"Comment as-tu dormi ?"

This literally translates to "How did you sleep?".

Here are a few other options:

* "Tu as bien dormi ?" (Did you sleep well?)

* "Ta nuit a été bonne ?" (Was your night good?)

* "Comment t'es-tu réveillé ?" (How did you wake up?)

The best option for you will depend on the context and the level of formality you want to use.