There was nothing really special about the office really. It was just a standard one at best. A nice sofa was laying near the entrance, just a few paces from the desk where the captain sat in, awaiting any visitors. Nobody what happens, Sai will always be there to greet anyone who decides to enter his office. It was just what he did really, not because he wanted to or anything like that, but it was his job. If he didn't do his job than he would lose his position. To lose his position over suck petty manners is something Sai wouldn't call an "honorable discharge." So, here he would wait for visitors. But, as stated above, even if he's not there, he will know. He know people who know people, who know him.