We had a great experience staying at Heide's apartment. Everything went very smoothly thanks to her thorough directions and excellent communication. The apartment is nice and quiet and well equipped with everything from travel-sized toiletries, cleaning supplies, basic staples for cooking and even a washing machine. It is not exactly a central location, but it is easily accessible with a couple metro stops nearby. Also be aware that it is smaller than it looks in the pictures- it was fine for the two of us but if you're bringing a lot of stuff or if you have 3+ people in your group, you might not have enough space.