I’ve stayed at this apartment for 2 days with my friends (5 people overall), and it was very great. The apartment had all the necessities that guarantee our comfortable stay: Wi-Fi, iron, oven, 4 beds, bathroom and the toilet was clean.
The only minor minus I found is that the apartment is located far from the city center (30-40 min), though it’s not a big deal as the transport infrastructure in Vienna is ok.