Just back from a 4-month stay at Opéra Majeur.
Very friendly hosts upon arrival, also clear communication during my stay. When I left the host even helped me carry my bags to the bus station!
The location is great, you can't be more in the heart of city and everything is within 2 minutes of walking whilst at the same time the street in front of it is almost car-free.
The apartment is also very well equipped. In the kitchen you find all the cooking equipment you could think about. The bed sheets are high-quality and the apartment is cleaned thoroughly. Summarized, very much recommended!