Our stay at CheckVienna was pleasant. Check-in was perfect, through a keybox. Very easy to find and to get into the appartment. We didn't receive the code on the day for the box like we should so I had to call for them to send it but they were very responsive and helpful with this. By my mistake, I only booked the appartment for one person when we were two, so we were very surprised to see everything was made and prepared for one person only, but they were really responsive to it and brought us extra towels sets and beddings on the next day. I still think it is a bit strange to only have a single duvet, pillow and bedding on a queen bed even if there is only one person coming in, and were a bit disappointed to see the pictures showed a better bed and shower than ours. Overall it was a nice stay, with some little things that could have been better. Thanks!