Places I haven't tried! All your base are belong to us!
Coworking spaces are pretty hit or miss. There's also Academy Hills (http://www.academyhills.com) on the 49th floor of Mori Tower in Roppongi that runs you 10,000yen/mo.
Other options:
Jiyugaoka — Robek's Juice — no WIFI, but spacious and has lots of power.
Near Jiyugaoka — Radio Plant Cafe — free wifi, but quite small.
Coworking spaces are pretty hit or miss. There's also Academy Hills (http://www.academyhills.com) on the 49th floor of Mori Tower in Roppongi that runs you 10,000yen/mo.
Other options:
Jiyugaoka — Robek's Juice — no WIFI, but spacious and has lots of power.
Near Jiyugaoka — Radio Plant Cafe — free wifi, but quite small.