dnt worry bout the smell hun..corns unfortunatly do smell..the best thing u can do is to take out the poo as soon as u see it..i keep an air fresher in the rep room which i spray everyday and keep a window open at all times..that does help alot!
Yes put some vines in there for him to climb and a defo a hide..mine likes to sit on it and watch the world go by
. hope all this helps mate. x