Our stay at Ilana's place was nice. The apartment was clean, apart from the floors which were a bit dirty. There was everything we needed there, although the cot for our 1-year-old son was broken, but luckily he was still able to sleep in it.
The location was great, especially during Christmas time, as the biggest Christmas market was quite near.
I would definitely recommend this apartment for people travelling to Vienna, perhaps best suited for one or two couples/friends.