We stayed at Arielle apartment from March 11-18. It is a 7 min walk to Hampstead tube and is located on the cutest street. The area is very safe as you need 2 sets of keys, one to the building and another for the flat itself. Since it is a residential area it’s very quiet at night with only a few ppl walking the streets which btw are lit up at night with Christmas lights. We slept with the windows open every night and slept great- no noise. You could hear the footsteps of the upstairs apartment but it wasn’t a bother and it wasn’t going on all night. There is little restaurants near by or if you ventured out near the tube there was more. There was also little shops to grab chips sodas or house hold items. Also, many wonderful bakeries full of breads and pastries. I would definitely stay here again and would recommend it to anyone looking to visit.