WiFi slightly unstable. Large worktable on the second floor with lots of power outlets. Drinks and snacks are alright, but nothing too special.
A great workable cafe near Myeongdong. It spans three floors, offering lots of seating. Great WiFi and there are power outlets at some seats. The desserts were definitely a highlight here. The cheesecake was one of the best I've had. On a Friday afternoon it was very quiet.
Everday Mooonday is an art gallery with a cafe in the basement. The building and architecture is definitely special. The cafe was very quiet and empty just after opening, but filled up after a couple of hours. WiFi slightly unstable (disconnects for a short time from time to time), and some power outlets didn't work.
A massive cafe in Seongsu featuring two floors of indoor seating, a courtyard, a rooftop, and a treehouse! There are many large worktables, suitable for groups. The WiFi is good, and there are power outlets along the walls (although some of the sockets weren't working). There's a large many with food and drink. I tried the pasta which was absolutely fantastic. It looks like they serve wood fired pizza as well. Overall, a fantastic place to spend the day working.
A nice cafe near Seolleung station. The interior is quite spacious with plenty of natural light. Very fast WiFi and lots of power outlets. Usually not too busy, although it fills up a bit around lunch time. The only downside is that the nearest restroom is in the office building two doors down, which is a little inconvenient.
A fairly standard Starbucks with plenty of seating. The counter seats facing the street have a nice view, good for people watching!
The Lounge at the Eslite Hotel is workable. There are two large work tables and a small cafe where you can order drinks and some small snacks. Be aware that the prices are very steep though (250 for a latte and 230 for a lemon ice tea). Good WiFi and power outlets available. I guess you could technically work here without ordering something by pretending you're staying at the hotel, but that might not be very "ethical".
I've passed by this place a couple of times but never tried it because it always looked very busy. However, if you go to the second floor it was almost empty on a weekday morning. It filled up and became quite noisy in the afternoon though.
The large worktable on the second floor is a nice place to sit and work, but unfortunately this table doesn't have any power outlets. The WiFi works well though.
The menu is very large, with a lot of food and drink options. I tried the Zhuori Dry Curry, which was very tasty.
Overall I would say this is a good spot to work from in the morning and have lunch, but afternoons will probably be too crowded/noisy.