Hazel and Nelly are so kind, we had really nice conversations with them. Their kids are well behaved and very cute, no noise disturbed our sleep. House was clean when we arrived, our room was impeccable. As for location, it's about an hour away from Piccadilly but there are three options of buses that go regularly (36, 37, 38) and it's a short walk from the bus stop.
At night you would have to get a cab or Uber and it was about 30-45 GBP, do bear that in mind if you stay out till late. The room is still super affordable, so we felt it was worth it anyways.