Pia's place was an absolutely great find. The location is perfect, don't be fooled into thinking you're far from the Innere Stadt, the metro staton is so close and it takes no time at all to get central. The place was clean and tidy, and Pia was incredibly responsive.
The only thing for us was this really was more of a budget stay (and the price truly reflected this and we appreciated the option). There were 3 of us, and we hadn't asked for a set of bedsheets for the sofa bed, so there weren't any. If this is something you want, be sure to make it clear upon booking. Small touches would have helped, there were no bath mats, hand towels in the bathroom or kitchen.
If, like us, you're just looking for a place to rest your head during a trip to beautiful Vienna you can't do much better than Pia's place, but a few small tweaks would make this a great place to stay.