We will stay here again. Hortense's apartment was perfect for us.
The listing was more than accurate... the pictures make the apartment seem smaller than it actually is - it's got plenty of space for a couple or a small family (note: the second bed is a foldout in the living room kitchen) for a week or so. We liked the convenience of "living" in Geneva, so much cheaper than eating out for every meal, and much nicer when traveling with a young child. There are three good supermarkets within a two minute walk, bus stop right out in front, twenty minutes walk from the old town, ten from the main station.
We had stayed at the hotel about a hundred meters from this apartment before, so we knew the neighborhood. The courtyard/square in front of the building can be loud during the evening/night (seems to be a bit of a hangout for some folks), but with the rolling shutters down, it was much much quieter than when we stayed at the hotel previously.

Hortense was helpful, meeting us on time, providing us with two sets of keys (helpful when one spouse is working and the other is out and about), and full explanations for everything we needed. We didn't talk with her after the first day, but this was because she made everything very clear for us, including several guidebooks, and a catalog listing how everything worked.

Heat was fine, hot water was plentiful (shower is European and older, so Americans might find it small, but fitted with a nice new "rain" shower head), the kitchen was well stocked - including spices, pastas, and oils. Internet is very good, no problems when my wife was working and I watched a video. Locks and keys all worked well. No real interaction with neighbors (could hear occasional walking from apartment upstairs - but not at all bad, just city life). TV was basic local channels. Elevator is tiny by American (and even Japanese) standards, but it got us up and down with no problem.

One thing to note, this is not a hotel or a BnB, it's an apartment, so you do not qualify for the free transportation pass that are provided at Geneva's hotels and campgrounds... on the other hand, it is an apartment with a decent kitchen, at a much better price than hotels. Cook two meals at home, and you've saved much more than train/bus fare would have been anyway.

We plan to stay there again!