A huge cafe spanning four floors with power and wifi. The upper floors have small tables and large worktables. The main downside is the menu is quite small and very expensive, especially if you don't drink/appreciate expensive coffee. I asked if they had any other drinks and they had a "secret" menu with juice (which was also very expensive).
This library has plenty of seats and outlets to choose from. There are quite a few people working with their laptops open so seems like a normal thing to do. Wifi is not the fastest but stable. One thing that was annoying is that they probably block ports other than 80 or 443, so you can't SSH, connect to Postgresql DB, connecting to VPN, etc. For taking calls, if you go towards the kids area, you might feel more comfortable talking since there are kids who are also loud. However, there are signs that says no loud talking on the phone so not the best place when you have a day full of meetings. The out door benches are also available and the wifi speed doesn't drop too much even if you're seated outside. There's a supermarket right next to it so you can go grab some drinks if you need any. Edit - I could bypass the restriction by using Obfuscated Servers with Open VPN (TCP) protocol on NordVPN.
Probably the best spot in Sapporo to work. The place is huge with a lot of seating, good wifi, and plenty of power outlets. The menu is ok, unfortunately no tea available. Just keep in mind that there is a 3 hour time limit per drink.
A nice spot to get some work done. At first I thought it was take-out only, but they actually have a proper cafe upstairs. The space is quite small, but there were plenty of seats available in the late afternoon. I ordered the tea, which was very small for the price though. I only saw one power outlet.
A very small cafe filled with bookshelves. The second floor is workable, but it is very compact/narrow, and the WiFi was not particularly stable. The restroom is hidden behind a bookshelf. Also the background music is quite loud, so you might find that to be a bit distracting. It's a fun spot to check out though.
A great coffee shop in Richland with fast wifi, and a nice selection of food and drinks. The avocado toast is really good and filling.
A very "random" cafe themed after Mr. Bean. It is good for working though, with decent wifi and plenty of seating (indoor and outdoor).
A great place for both indoor and outdoor working. The cafe is a popular spot for studying and working, but it is large so you can still find a seat most of the time. Fast WiFi, but power outlets are a bit difficult to find. I would say the biggest downside is that they close quite early.
Hidden gem near Shibuya. Cafes in Shibuya can get very crowded and busy, especially on weekends, but this new spot is a bit away from the center and wasn't busy at all on a weekend afternoon. Lots of food and drink options, although no plain black tea available.