Justina was a good and amenable host, and even looked after our luggage during our last day in Vienna. Given the space, the shower/bathroom was great with a nice powerful shower :-)
The air felt stuffy and the linen/towels didn't smell as fresh as they could have? The aroma was successfully masked initially with the incense Justina burned for our arrival. One window didn't have sufficient blackout-just a cream blind, which meant we didn't get as much darkness during nighttime as we would have preferred.
These things can be easily remedied we felt.
We both loved the excellent location and only a 5 minute walk to the nearest tube station. The immediate area was both central and quiet, so great :-)