My friend and I had a wonderful stay at Eva's apartment on Burggasse.
Eva is an excellent host (as can be seen even in the helpful information she provides as part of the booking). Though I was late arriving due to a flight delay she was gracious and welcoming.
The apartment itself is exactly as pictured, clean and well maintained. The location is excellent, walking distance to all key attractions and to public transport. We heard a little street noise one night but after we shut the windows, subsequent nights were quiet. All in all, highly recommended.