Even in the best of conditions it can get to a persons nerves. Cabin fever an all that. He'll screw up and want to leave on his own soon enough. Although I wouldn't
put it past the Ecuadorians to sneak him out to a park or some other place for some "fresh air" .
I don't know what that embassy is like, but if its like most, there is probably an enclosed garden he can wander through in relative safety.
As for 'Cabin Fever' - I'm certain he is being well entertained by his Ecuadorian hosts.
Edit: I looked on Google Maps, the Ecuadorian Embassy does indeed have a closed-in courtyard of some sort.