During the day, he sleeps either in his pram, on his bouncer, where ever, but, its not in his bedroom. We leave that for night time sleeping only. I do close the door to his room, but, i dont realy think its necessary, it makes no difference to his sleep.
The cot has solid ends, and is againt a wall, so, i suppose its really only one side that he can see out of, i could hang a blanket or something on the outside of the cot for a while, just to block his view.