He is a show-off.

 The glass door on the right hand side of the room opposite its only window is broken. The highly complex mechanism which allows it to tilt for airing or to open for walking is broken, now it will not open. It is good that there is other access to the balcony.

Outside, the sky is grey, it is a bleak-weathered day.

Consider that it would be sensible to pack a suitcase with clothing and toiletries necessary for about a week, to enable a rapid departure at the next bout of depression and panic. This might prevent the drift into pure misery at the thought of having nowhere to go. It is not as if a suitcase was anywhere to go to, it would just lessen the sense of panic at being unable to change clothes or anything at all.  Maybe such a suitcase would be good to have. A spare suit, underwear, shoes, and toothbrush with sleeping clothes, perhaps a few extra day clothes and a pullover. Such a case would have the function of the bucket beside the bed when plagued by the fear of vomiting and of not having anything handy. When such a bucket was around, there was never any real need.

The light outside has turned darker now, even though it is still just before half past one in the afternoon.

Think about the reply made to the email received recently, a reply to the man who starts every sentence with "Ich" and repeats this at least once in the course of the sentence. He is not narcissistic. He is a show-off.