The arena is simply some large random fantasy city. Feel free to create whatever you'd like there. 

T1 is fine with me.

I'll post the character sheet.

Name:Size: Large Fantasy City
Properties: No Special Properties
Player Capacity: Free For All 
Description : A large sprawling city, with the different 'districts' that are often common place; Slums, Higher End, Market, Docks, Graveyard, etc.  
Flavour Text: None.