Mo people, mo Prada. (but let's not speak ill of the Chinese - in a traditional Japanese household, everyone sleeps in the same room, on futons, on the floor, and everyone uses the same bath water, sometimes for a many days (after meticulously showering of course))
I was in Tel-Aviv recently and I can't begin to tell you how great it was to be able to just take myself where I want to go - especially when I was meeting my mom in her greenmarket stand in suburbia and it turned out to be pride parade with street closures and no taxis - hop on scooter (oddly called a Korkinet in Hebrew, a funny misconception of Trotinnete) and dump it on arrival, no fuss, $3.
But unless something very very recently changed, this isn't happening in Tokyo, where you can get heavily fined for riding an unregistered electric bike, so walking is walking. (Maybe there are some bike rental shops, I haven't looked)
Explore further with flexible dates, check if the minimum is really a minimum, and ask the managed mansion companies if they have special deals because often they'll offer you things like a high floor 70m2 place for the advertised price of a studio.
> I don’t see any closet or drawer space though …
I don't remember, I assume there was a closet.
> And 15 minutes to and fro the subway every day, that IS a serious drawback.
Well, only 12 minutes to Omotesando Station apparently, but it might feel like more if it's raining or hot or both. Still there are places closer to the metro for sure.
> How is this neighborhood once I have arrived home ?
So this is where Tokyo is a bit different. Loosely there are four types of districts:
Entertainment - these are regulated by the Yakuza and usually have a huge number of sex and gambling venues, bars, and casual restaurants (but make no mistake, some of the city's best restaurants are in such districts). Kabukicho is the most well known, but there's one in Shibuya (Dogenzaka), in Akasaka, a really gnarly one and an even gnarlier one in Taito, Roppongi, and a one that's superimposed over Ginza
Commercial - these are usually on the 2-3 blocks in from major avenues, often expanding away from Subway stations. If you look at this map section they're pretty easy to see. These will have many restaurants, and some bars, but most of the activity will end by midnight (there are always, always, a couple of places open until the first morning train).
Office - dead at night and weekends but often bordering an entertainment district
Residential - once you move a couple of blocks away from main avenues there are very few businesses and lower buildings (often you'll suddenly run into a bunch of single family homes right behind commercial craziness)
And everything is a patchwork of these. Not just in central Tokyo - you can keep going west or south for a very long time until you reach what you'd think of as a suburb with shopping malls and such.
So if you look at that map again, you are within 10-15 minute walk of many, many places with the general spirit that it's a fairly upscale area so those places will tend to be better when they're high end. If you'd look at Ueno the overall picture will look the same but places will be better when they're casual.
Hipster stuff tends to be on the west side, going all the way out to Kichijoji, but as with any other statement there are exceptions.