Had a lovely stay at Kiki's - the apartment is HUGE. There was just the two of us but with the sofa bed, you can easily fit four in the apartment. Love the decor as well, everything was clean and there's a fully stocked kitchen which you can make use of. It is located at the top floor and you have to climb three flight of stairs but it wasn't a problem for us. We didn't meet Kiki but there was no problem getting into the apartment as she left us lots of instructions. She was also quick in responding when we enquired about luggage storage (which wasn't a problem). The best thing is the location, it's a short walk to the metro (U-Bahn) and you can easily walk into the main city centre. No issues with noise. Just be aware that shampoo and soap is not provided which was fine with us as we brought our own but just useful to know!