Sonya's place was amazing. The room is thoughtfully decorated and it is well-equipped for a long or short-term stay. I stayed for 1 month and I had everything I needed. Sonya and Lucy, who helped me check-in, were very responsive and helpful.
The apartment's location is also fantastic - very close to the Jardin des Tuileries and the Louvre in the 1st arrondissement. The metro is close, a farmer's market happens in the square outside on certain days, and many places of interest are a few stops away by metro or walkable.
I highly recommend staying at Sonya's place when visiting Paris whether for long or short-term stays!