Interesting place - has a visible baroque interior, which adds taste and color to your Vienna experience. Very convenient in terms of a walking distance to anything and a few affordable eateries nearby (we loved the "Bagels" cafe at the neighboring block, the bagels are better than many New York ones!).
The place is OK to spend a couple of nights (especially considering the price), but if you expect much more than you would expect from an average US motel, you might end up disappointed. Not all of the lamps are functional, bathroom has no windows and the only greenish light looks as if borrowed from a vampire movie... no tea machine, had to ask receptionist for boiling water when needed. No AC, so it might get hot in summer.
The breakfast was pretty good though - cereal, juices, yogurt, veggies etc.
Overall - might be fine for unpretentious traveler, but do not anticipate it to be luxurious in any way.

Just return from Vienna. So incredible experience. This experience has been completed by staying at Pension Franz. The location of this hotel is one of the best (at this price), just 2 min from Rathaus and 4-5 min walking distance from Hofburg. The general atmosphere is a Viennese one, very chic and cozy. The room we stayed, for a family with 4 members is a big one, very nice and very clean. The reception and lobby are simply lovely - having a charming look. The breakfast is basic and more than that you had to ask for the coffee and even for water glasses, bread and other items to eat, and even so you should wait for these. The staff was kind and helpfull.

I would not stay here ever again! I stayed here with my partner and 2 young children, we had our room broken into in the middle of the night in which we woke up to a man in our room! 2 other people in other rooms were also robbed of cash and valuables on the same night! Management and reception did not care I believe it was an inside job! We were promised a refund which we never received!
DO NOT STAY HERE!!!!

We stayed here for 3 nights in September. We were lucky to get a room which had a view of the Votive Church and lots of sunlight during the day. This pension is near the historic centre and also close to Train Station. The rooms are clean and comfortable. The hotel has an old world charm to it, which we quite liked. However we did feel that the rooms close to the breakfast area will not have too much privacy.
The breakfast was a good spread indeed. The staff in the reception is helpful, the map they shared was useful. They also arranged a taxi to the airport since we had an early morning flight. There are some nice places to eat nearby, though they close early at night.