There are two YABOO cafes near Yongkang St. This is the second one and the vibe is quite different from the first. The interior is brighter and more relaxing, good for study or work. It was very quiet on a weekday afternoon, with only a couple of people in the cafe. Comfortable chairs, decent WiFi, and some power outlets.
Note that the back room WiFi and cell reception is very poor, so don't sit there if you need internet.
A great spot near Yoyogi where it feels like you're sitting outside thanks to the large open doors. I think it's a popular tourist spot since it's near the North entrance to Meiji-jingu shrine. Nonetheless it's a solid work spot. There are few outlets though, and the wifi wasn't working when I arrived (I asked the staff and I think they rebooted the router, which fixed the problem).
A very compact cafe in Ebisu. There are some seats inside, and also a couple of tables outside. It seems like a place where most people get take out, but it is definitely workable, with fast WiFi and power outlets.
This public library is one of the Shibuya ward libraries that is closest from the station. Yet, the space is quite limited, you can't take calls unless you go downstairs and book a phone booth for 150 yen per 15 minutes, and you have to sign up (it's just writing your name to a sheet) to use one of the plug seats. They also make you choose how long you plan to use it. It doesn't give you much work vibe to be completely honest.
When the weather is nice in Amsterdam, this is an awesome place to sit and get some work done. The cafe/restaurant is located inside the Eye film museum, but is accessible to everyone even if you aren't planning to visit the museum.
The views are great and the space is definitely workable (there's wifi and power outlets). It can get busy during lunch time and weekends. Some of the higher up tables are reserved for dinner guests after 5pm, but I believe the bottom area and the very top back area are always available. There's a small selection of lunch options, so you can get some food as well.
The easiest way to get there is to catch the free ferry (F3) just outside the central station. It's just a short ride and the ferry leaves every couple of minutes!
This place is operated by the Imagin Bank. Technically, you may need an Imagin Bank account, but the entrance staff were welcoming and did not check with me. I didn't even buy a coffee I think. According to a Google Maps review, the wifi is unusable, but I did not have any issues with it. The staff helped me out to connect it. The place is roomy and has plenty of power outlets. If you go upstairs, there is ample space to chill and relax like sofas and some books to read. I cannot recall the exact speed of the wifi, but I do remember having no trouble working.
While spending some time in Taichung I found this cafe. On a weekday morning, the first floor was quite busy with people having brunch. However, if you go upstairs you'll find a large room, with lots of natural light, suitable for working. There's even a terrace if you feel like working outside. The menu is large, with lots of food and drink options. I'm always happy when I can find a good milk tea without sugar. Overall I like the vibe of this cafe, but there is room for improvements. I wish the seats were more comfortable, there were more power outlets, and better WiFi.