Dear [Friend's Name],
I'm writing to you from our holiday! We're staying in a lovely [house/hotel/campsite] in [location]. It's [describe the place, e.g., very peaceful, lively, beautiful]. The weather has been [describe weather, e.g., sunny and warm, a bit rainy but still nice]. We've been [mention activities, e.g., swimming, exploring, relaxing].
Hope you're doing well!
Best,
[Your Name]