Answer and Explanation:
An example of a reply to that email is below:
Dear Nathan,
How have you been? I'm glad that you will finally get to rest! You've been working really hard.
Among the places you have mentioned, I would recommend China, more specifically Shanghai. I was there just last year, and I can't wait to go back. Since you like architecture, I believe you will be fascinated by the buildings. There is this amazing contrast between modern and old buildings, as if we were in two different worlds. There is history living side-by-side with modernity. Another reason why I recommend Shanghai is the food. You should try the city's famous dumplings!
Let me know what you decide!
Regards,
...