Ask HN: what it's like to be a remote Web/iOS/Android freelancer?

I'm thinking of going into FIRE [1] in a couple of years. I can't imagine myself not doing any work at all though, so I'm considering remote web/iOS/Android freelancing? Personally, it would be ideal for me to take on a project for a limited period of time (ideally a month or two at most), bang it out and then relax for a while. Is anyone doing something like it? What is the market for remote freelancers from outside US (I'm in Europe)?

[1] https://whatis.techtarget.com/definition/FIRE-Financial-Independence-Retire-Early