Thanks a lot for your thoughts, nicolas75.
I have been mulling over testing the hotel since its opening, especially given that IHG offers it at the special discounted "new hotel" rate (which is prepaid but at below 100€ is acceptable for a 1-night stay). I do not like the neighbourhood (fairly industrial) and the building used to be a fairly old and miserable Austria Trend hotel, so I was not very enthusiastic about the results of their revamp efforts (and your pictures do not change my view in a positive way) ...
I will keep it on my test list, in case I am short of a qualifying night or two, I might give it a try.