Ursus, thank you for the very nice pictures and interesting information!
In Vienna, outside the 1st district, I was always impressed by the
harmonious appearance of the Josephstadt and Neubau districts, with many complete streets and squares (mostly historicist, but in the part of Josephstadt which is closer to the centre I think we have a lot of 18th century architecture).
The district of Wieden is also of great interest, but here you can still see scars of the war: simple boxes, many of them grey (I wonder why
they are not painted or improved in some way, so many years after the war-for instance the Belvederegasse). I don't know Landstrasse (the 3st district) so well, maybe it is better than Wieden.