It's a very addictive schedule. The only downside is that you'll be alone pretty much all day because not a lot of people can work like that.
Jealousy factor can't be beat. But beyond making your friends/acquaintances drool on social media, yes the ergonomics stink for classic development.
However, I think variety is nice. Just like in an office situation, sometimes a breakthrough idea comes when sitting alone in an uncomfortable meeting room (and without secondary monitors). At home, I do some work on my back deck (partially remote worker here) but it's only when I'm in that mental place where I need to crawl out of a box and get a fresh look on things. It's also nice during meetings, so long as you prevent outdoor audio from distracting the conference call.
I find it relaxing and easier to concentrate. Probably related to how I stare out the window when thinking about a problem.
Too much light, sand, and heat to be able to concentrate
Even if you're working in a coastal hut, nothing beats good ergonomics of a real office