As always, it is also good to search other Hotel booking sites such as Expedia, Booking.com, Hotels.com, etc., and there may be availability on home stay websites as well.
Hotels further away who have given discount:
Lerchenfelder Straße 1-3, 1070 Vienna
Single Room: €156; Double Room: €172.
Includes Breakfast: Yes; Includes WiFi: Yes.
Booking available until: 9/5/2017.
Booking Directions: by phone or simply go to http://www.25hours-hotels.com/en/museumsquartier/home/home.html. Select a date, enter your personal code “ISSS2017” and the friendly elves in our booking engine will do a no-obligation availability check for you. The unique booking code which identifies you and/or your company as a friend of 25hours is: ISSS2017
Booking Code (if needed): ISSS2017