I enjoyed my stay there.
I can give out two tips for those who are willing to book this apartment;
1. Screenshot the check-in process before you travel if you won't be having the internet in Vienna.
that's what I struggled with trying to figure out how to get in, plus my phone battery died so I had to charge it in the nearest restaurant.
2. Don't copy and paste the long WiFi password write it down on your phone manually or else, it will not work.
I tried copying and pasting hundreds of times, and I wasted a lot of time in there.
Besides these two tips, I can say if you don't like huge fluffy pillows that can hurt your neck after your sleep. then this can be a bit annoying
I know it did for me personally but I stayed for two nights so I it wasn't that bad.
Yeah I think that's about all.