We had a good stay at Chris' apartment. The location is conveniently next to the metro, bringing you to the center quite fast, and Chris has been very responsive and friendly from the start and does his best to be a great host.
We did have some slight issues with the water temperature but we mentioned this to Chris and he'll look into it. Also, the bathroom is not fully sealed off from the room, meaning there's no sound isolation, and the room can get humid from time to time. These two reasons are why we gave 4 stars instead of 5.
Thanks again for the stay Chris, and to future visitors: enjoy Vienna!