I am a solo female traveler and I felt very safe in the neighborhood and I felt like at home at Jean-Philippe & Xuong house.
The room is very clean and as shown in the pics. If the windows are opened it could be a bit noisy at nights but otherwise, if closed, it is perfectly fine.
Jean-Philippe and Xuong welcomes you very warmly and they are very supportive and take the time to give you very good tips about Geneve. They will definitively add value to your stay in Geneve!
Also, take the advantage of enjoying a good chat with them!