Satoru and Kazue's place is exactly as described. I hadn't realised how well placed the flat is. We were able to walk to many places and there were countless restaurants and cafes in the back streets where you felt you were seeing the real Tokyo and not just the tourist traps.
Tokyo was easier to navigate than I had expected. We didn't need any help from Satoru and Kazue but it was reassuring to know they were there and responsive if there was a problem.