My wife and I stayed here while visiting Vienna, the location was good, price was okay.
The place is just okay. Not bad, about the quality of a 1.5-2 star hotel in the US, like a Days Inn.
Good for a night, like a flop house, but not for a long stay.
You get towels only for the first night and have to pay €4.50 for more. The hot water worked one day, some sort of power surge caused the heater to reset, so no hot water for a shower on Saturday night after a long hot day of walking, no hot water all day Sunday, finally on Monday mid-Morning hot water.
I booked for 6 nights, but left and went to the Marriott after 4.
The price was okay, but other deals and better quality services at hotels that would give comparable size room are available in Vienna.
The room wasn’t dirty, it just wasn’t very clean, it was tidied up but dirt stains on the walls, and a couple of dead flies on the bed. The pillows were uncomfortable and only got one.
Overall, I would recommend a stay if you are staying one night or two at most.
I am not sure of the quality of other places similar price and location, but coming to visit a city like Vienna this option was just okay for us.