We stayed at Manfreds place with the three of us for a weekend trip to Vienna.
This worked out perfectly! Two stayed in the bed, one on the sleeping couch (which slept really good too). We still had a lot of space left for our stuff, for a proper breakfast, etc.
The place is brand new, very clean, tastefully decorated with high ceilings and had all the little extra's needed to make the stay comfortable: towels, hair dryer, coffee available, info about Vienna, etc.
We all especially enjoyed the modern bathroom and kitchen.
The nearest metro stop is less than 5 minutes away - it takes you easily to all the must see's in Vienna.
Moreover, supermarkets and some restaurants are to be found there too.
All in all, the three of us agreed that we would definitely recommend Manfred's place to anybody who's visiting Vienna!