We didn't meet Catherine but a property manager called Valerie. She is responsive, we were welcomed very friendly and got useful tips for our stay. The checkout was fairly easy as well.
However make sure to communicate how many of you will come and that you have intention to use the kitchen.
When we came there were no kitchen essentials (oil, pepper salt) that were advertised. Even though we stated that we're a group of 4 people only 3 coffee pads were provided for the first night.
It should also be noted that there is a "ceiling" between kitchen area and living room at about 1.8m height. We banged our heads there so make sure to pay attention.
All in all still good value for money and the flat is fairly well situated but with a bit more attention the stay could have been better.
Also make sure to pay an additional upfront 40€ cleaning fee in cash or via bank payment.
After we left the property manager told us she'd buy kitchen essentials for the next guests and provides a receipt for our cash 40€ cleaning fee.