Flat is really new renovated. Super quiet. except, there runs always a fan for fresh air (no idea if you can switch it of, but i didn even ask Jessica as it was fine for me).
The flat is on garden level, i heard in New York thats a normal description for half in the ground. It really doesn´t matter, but dont expect any nice views to outside as there are 2 windows in the whole flat.
I totally can recommend the flat. Its quiet, not hot (when its outside really hot). Furniture is really nice. Perfect for families. Respond of host was almost instand.