Namio's place is exactly what we were looking for! My husband and I enjoy walking and were hoping to find a calmer neighborhood in Tokyo.
Nezu is a pleasant 20 minute walk (past a pond with pedal boats shaped like swans and a temple shrine) to the Ueno station, so if you have the JR pass you can travel all over from there. The Nezu station is super close (~2 blocks), but seeing as we had the JR pass we always walked to Ueno.
One night we stumbled into a tiny restaurant (6 seats, super cozy, no English menu and the owner spoke no English) around the corner from the house. We enjoyed using what little Japanese we learned and were humbled by how helpful the other diners were about helping to translate and help us choose what to order. There seemed to be many small places like this in the neighborhood so if you have time, be brave (if you don't speak or read Japanese) and check them out!
Yanaka Ginza was an easy walk as was the Nezu Shrine. Across from the Nezu Shrine there is a great little shop called Happy Panda. The shop owner is thoughtful about what she chooses to sell there and you can tell she is passionate about what she chooses. Great spot for some quality things to bring home from your trip.
We decided to pack like for this trip (4 outfits) so we did laundry at the laundromat on the same street as the Nezu Shrine. It was easy and there are a few types of powder detergent available for 50 yen.
I could go on and on about all the great experiences we had during the week we stayed there, but to sum it up: if you'd like to see a quieter side of Tokyo still within walking distance of a JR line that is easily accessible to what you need then this is it!