Guatemala - several questions

Gretchen, are you out there? Is anyone out there?

I am thinking of going to Xela instead of Antigua for spanish school and am also interested in going to a gym while I am there . . . .

Can you help?

1. Antigua v. Xela (I actually like big cities)
2. How cold is it in the homestays in November?
3. Which schools do you recommend and why?
4. Are there decent gyms near the homestays or schools?

THANKS!