Few places do this anymore, it's more common in the south which is insanely hot at mid day

In my experience it is quite normal in Madrid, which does get blazingly hot in the summer but is pretty okay the rest of the year.

Depends on what you're looking at. If it's public-facing, then, yes, but only because demand at those times is very low.

Otherwise, for office work, lunch breaks are short. European style.

It is a serious burden if you work in an office which is air conditioned anyway. The most serious problem being that the long (and it was generally 3 hours in the south where I was staying) break is intended for sleeping.

Problem is, most people now don't live 5 minutes walk from their place of work, so there isn't time to get home and sleep before returning to the office. But there is nothing else to do. Everyone else is on the same break. You can't run your errands for the day because everywhere else is shut as well.

As a student living 5 minutes from my classes, I found the dual sleep (usually about 4am til 8am and 1pm til 3pm) with the main meal in the middle of the day to be fantastic, but for modern working conditions and commuters it is a serious problem.