Nice hotel, stayed for conference in Vienna and it is right on the metro line so you can go into Vienna city easily.
I had breakfast included- there was cereal, breads, cold meats and a hot buffet of sausage, scrambled egg, beans etc.
All i would say is that it does get busy for breakfast so tables were short and some items needed refilling but that's not the fault of the hotel it's just something as a guest you need to bear in mind. I also had lunch here when i arrived and the club sandwich was very nice.
The room has a small fridge which i kept some small bits of food in, there is a spar a very short walk so you can grab some deli bits as you need.
All in all a practical hotel for my trip to Vienna, thank you.