Nathalie is a great host, very friendly, helpful and communicative, sharing both her home and her positive energy.
The place is greatly located, away from the tourist crowds, but well connected to the city centre by a pleasant tram ride (stop is nearby). There are a lot of great places nearby where you can eat/drink/shop/walk around.
The house is easy to find (the indications and the check-in/ check-out process ran smoothly). The room is quite small, but comfortable, great for a short stay as a solo traveler. You also have access to a shared bathroom, kitchen (coffee, tea milk) and a small patio (which looks better than the photos, as it's recently renovated). Plus, of course, shared access to the very well-behaved cat.
The only things I would mention - even though they were no real deal-breakers: there is a boiler in the room closet - which goes on and off during the night and might be problematic for some light sleepers (Nathalie mentioned it will get sorted-out soon), the shower runs straight in the bathroom (no curtains/separate space), thus everything becomes wet in the process, the walls are quite thin and the noise in the building travels.
All in all, the place was great for what I needed for my short trip and I would stay here again.