Good points:
1. The apartment is very close to public transportation (subway and tram). Considering that public transportation in Wien is VERY efficient this is a point to count as highly positive. You can reach the city center even with a short walk.
2. The apartment is good for 4 people but even for 6 is acceptable.
3.The apartment is clean and has all the essential furniture and tools in a good status (I liked the floor: wood parquet or similar)
4.The apartment is just in front of a small restaurant: we spent 15 euro for a soup + main dish + bier : quite reasonable
Not completely good:
- The arrangement of the cooker (close to the shower) and the washbasin (in the sitting room) a bit unusual.
- Pillows could be a bit more comfortable (within acceptability but this is subjective).
We was there in January: heating very efficient. No problems.
Consider that the apartment is at the ground floor and possibility to open the windows is a bit limited (and windows have not transparent glass). Perhaps this should be considered in summer time (I don't know if there is air conditioning)