The apartment is beautiful, very spacious (one bedroom with a large bed, one huge living room, a small bathroom but clean and modern compared to others apartments in Copenhaguen) and overall SPOTLESS clean. It's easy to feel at home because one is not surrounded by the owner's stuff (she has a private room where I guess she stashes her stuff), which is something that I personally like. And the stuff that is left is all you need for a few days (maybe not for the intensive cook though), the decoration of the apartment is also great.
We were there while it was hot in the city, but it was OK with the upper windows kept open, the street is a bit noisy with a restaurant right below the living room's windows and a cool bar across the street but by 11PM, it's gets very quiet (even on Saturdays).
The neighbourhood is great, 5 minutes walk to the metro station and the super cool food market where one can actually eat breakfeast, lunch and dinner, lots of seats and tables available), excellent and affordable restaurant (Höst) down the street, the pizzeria downstairs is good, several supermarkets within a short walk. It's strategically located between the touristic area (10 minutes walk to the Latin quarter) and hip Norrebro, very very well located
We did not get the chance to meet Jette but she was available by emails/phone and when we encountered a small problem in the apartment, she took care of it within a few hours, which was great.
The only downside is that for those who have a light sleep, since the apartement is located on the 1st floor, you might get awaken in the morning by the neighbours rushing down the stairs and through the main door, but my husband had earbuds and slept like a baby every night.
Otherwise, I would strongly recommend that apartment that is very worth the money, it definitely was a part of our lovable Copenhaguen experience