Has anyone here stayed at the Imperial Riding School Renaissance in Vienna? Years ago we stayed at the Marriott on the Ringstrasse, but this Renaissance has some amazing rates and is a lower category hotel, but appears quite wonderful on line, with a fairly central location, etc. If you have stayed there, was there access to the club level for gold/platinum elites? Were you upgraded to club level? I have booked this property for mid-July but also welcome perspective on other options in Vienna. Also, any favorite Vienna to-do's.