A great spot not too far from the Gakugeidaigaku station. Every seat has power and the WiFi is fast. Drinks are ok. There are tables which are quite comfortable to sit at. There are also counter/bar seats.
Coworking space that is free and easy to sign up. You have to sign up and show the QR code techinically, but I was not asked. The space is full of tables and chairs. They seems to host events sometimes so should check the schedule in advance. You can pay up and use the restricted area with phone booth, but the free member area is decent enuogh. The only down side is that the coffee is tasteless, and there is a strict rule against taking phone calls.
This lobby cafe is located inside the OMO5 hotel on the 14th floor. Use the hotel entrance and take the elevator up. The cafe is large and spacious, with great views. The menu is fairly small, but has some basic drinks and food. There is also a large outdoor seating area.
A fantastic quiet spot in Shimokitazawa. I appreciate that the stools at the large table where cushioned! An extensive coffee menu, and some other non-coffee options as well. Very fast WiFi. I don't think they have any power outlets.
A popular spot in Hiroo. The second floor has counter seats by the windows overlooking the street below. There are power outlets and very fast WiFi. There's also an outdoor area on the 2nd floor, but it seems to be a popular spot for smoking, so I probably wouldn't want to sit there.
Another branch of Streamer Coffee in a quiet neighborhood. The seats were fairly empty on a weekday, probably because the area is basically lots of small offices and not too crowded with people like Shibuya. Also the fact it is bit of a walk from any nearby stations might also make it less crowded than other places. WiFi is very fast and reliable. There's only one seat with plugs which is the couch seat at the back.
A very small cafe that originates in Australia. Plugs are available althought they are a bit out of sight underneath the table. Desks are well lit with natural light + a soft lamp and lovely to stay around. It's crazy they are open till 10pm on weekdays, and open from 7:30.
A nice coffee shop just next to Monzen-nakacho station. Some high tables on the first floor, and more seating upstairs. The large tables have power outlets. Good WiFi. I wish they had some regular tea as well.
This library is right outside of the Chatswood station and the area is full of Asian restaurants and big malls. There are plenty of tables and chairs around but during the day, most of the seats are taken by the local highschool students (edit - I realized it's exam week when I went). There are quite a few kids who are casually chatting but not in a loud manner. There is a glassed corner near the entrance where you would be slightly more comfortable taking calls. Also, if you need 100% privacy and quietness, they have one bookable phone booth. It is free for the library members but it would cost you $2.50 / 30 mins if you are not a member. You can talk to the staff to book a spot.
A very interesting spot in Kita-Senju. It's about a 10 minute walk from the station. Apparently this is an old abandoned bowling alley that has been converted to an art space and cafe/bar. I was there on a friday afternoon and it very quiet, just a couple people chatting or working on their laptops.