My arrival was a bit hectic due to transportation issues, but Stella was very patient and waited for me to give me the keys even though she had to head to work. She is very responsive to messages and arranging. I had no issue at all during my stay.
The flat itself is as described, no bad surprise. Just note that the washing machine is shared by the floor, but it is conveniently located right next to Stella's flat, and you don't hear it when it's working. Very clean, towels and bed linens included. For a 1-person trip, it is good value for money with 3 subway stations located 10-15mn walk, bus stations 1-2mn walk, a supermarket in front of the building.
A great stay, I would recommend this flat.