Quiet cafes around Tallinn

Tere! I'll be in Tallinn for upwards of 3 months starting from this coming Saturday. During that time I'll mostly be working from my apartment, however it's important that at least a few days a week I go somewhere nice and quiet, and work outside for a while :)

So wondering about nice cafes around Tallinn that are primarily quiet, but also have decent wifi (less important, I can get a 3G stick). Actually already know a few places that I like, but wondering if there are any little corners of Tallinn that I haven't seen yet.

My appt is very close to Marine Keskus, so pretty much anywhere central Tallinn works.

Thanks. Can't wait to be hanging out in my favourite city for a few months!!