Honestly this was not for us. I should say it was extremely hot in Vienna when we arrived. The unit was 30 deg C inside. We enquired about renting an AC unit. Let me save you some money… it was incredibly loud and only lowered the temperature to 27 by the morning. The bathroom is strange, with the shower in one room and toilet in a separate, tiny, poorly ventilated closet. Also, the wifi is unusable. Given all these issues, we checked out early, and to my knowledge did not receive even a partial refund.
I think if you are visiting in cooler weather, don’t need wifi, and don’t mind no ventilation in the toilet, this is in a good quiet spot with good proximity to the underground train station Schottenring.
But if you’re a family of 2 adults and 2 young adults, find something else.