This was our third stay, because we really love the flat facilities and location, which is excellent.
Ginza is as convenient as anywhere in Tokyo, and is as walkable as any location can be in a city as big as Tokyo. The main station and Imperial Palace are easily walkable as as the upmarket Ginza shops and restaurants (and two excellent coffee shops, Yanaka and Bongen), yet the flat is on a quiet street.
The flat is convenient for two people with an excellent shower and useful washing machine for longer stays. The kitchen is compact but well equipped, and useful for breakfasts as most shops don't open until 10 or 11am. There isn't really space for sitting down to an evening dinner, but with so many local restaurants to try, cooking and eating dinner in is unlikely to be a priority.