Thoroughly enjoyed our stay at this hotel. I was visiting family nearby and never stayed in a hotel before. The isn't able to host guests anymore, so I'd always seen this hotel from the tram & been attracted to it.
Its historic character is appealing. The interiors are beautifully updated, so don't be put off by the age of the exterior. There is an elevator we were happy about, after staying on the 4th floor of a hotel in Paris without. The room was very clean but small. We were on the top level so we also had the roofline, but we enjoyed the loft-like coziness. There are more spacious rooms, but likely more costly.
Free continental breakfast was decent. The bread and croissants were delicious. If you request coffee, it's made behind the bar from a real espresso machine just like from a coffee shop. The hotel has a bar/restaurant, but we didn't have time to dine there.
The negative for light sleepers is it is literally next to the tram stop (lines 12 and 18), but that is also very convenient for easy access to the main train station (Gare Cornavin) and Geneva city center.
The area itself (Carouge) is quaint and lovely to walk around. There is a grocery (Migros) within two blocks where you can pickup ready-to-eat food, however there is no fridge in the room.
It seems to be owned by two men, so it supports local small business. We did not find the staff friendly, but that could be caused by language barriers, as well as Swiss culture. Service was good. Would stay again.