Great place to sit and get some work done. Be sure to arrive early to get a good seat. There's one large work table with pretty good chairs and power outlets. WiFi is decent. There's a Louisa coffee so you can get drinks and snacks. From the MRT follow the signs to HSR and then take the escalator up two floors.
There are many cafes near Yongkang St, and this is another great option. The interior has several different areas, all of which are decorated very thoughtfully. There's even a small covered outdoor seating area. Comfortable seating everywhere (even cushions are provided!). The drinks selection is large, with many good options, and there's some food as well. The beef pie was really quite tasty, but the portion size is a little small. It was very quiet in the morning but got a little busier around lunch time.
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.