Good hotel, clean rooms, amplifier in the room to play your music is a nice add on. Pity you can't make coffee in the room, but we knew that, part of the concept. On the other hand, you could get coffee or any other drinks at the hotel bar, which is a very nice place to hang around as well in one of the cosy corners. Wide choice of drinks, and limited but quality choice of food as well.
Only small negative point : breakfast room is too small for all the guests, you sit very close too each other, sometimes had to wait to get a table. But once you sat down, all fine again : wide choice of healthy products for breakfast, good quality, very tasty !
We'll come back to Ruby (in Vienna, or somewhere else)