I spent a nice long weekend over New Year's Eve at Gisela's place and I enjoyed my stay. Gisela was a very good host - very prompt to answer all of my questions and great flexibility with check-in and check-out times. She also gave me very useful tips about the city.
The place is just a few steps from the heart of the city, thus making very handy to reach all of the main amenities. It was clean and tidy even though I found it a bit damp.
I would therefore rate positively a stay at Gisela's place.