Do elves in Tamriel have the classic fantasy element that they are long-lived (usually around hundreds of years of life) or are they short-lived like humans?

Do elves have to sleep for 8 hours, or do they simply enter a 4 hour trance while laying in bed (the latter being similar to d&d)?

I've had these questions from the moment I started playing the Elder Scrolls for the first time.

Are we talking about your normal bosmer, noble bosmer, magical bosmer, or combinations thereof?

Ah, what the hell, my stab attempt is
Peasant/wild: 120ish years
noble: 300
magical: 700

I see them as not living as long as the dunmer, who are around the range of 150ish-200ish (peasant), 400ish-500ish (noble), 800ish-1000ish (mage). Dyviath Fyr is an odd exception, but he was a chimer before becoming a dunmer. [censored], the guy is nearly as old as recorded history (he's at least 4000 years old, older than the Tribunal).

Expect the altmer to live significantly longer than bosmer and dunmer, due to their practice of eugenics and attempting to be as godlike as possible. I'd say, 400-500 for peasant altmer, 800-1000 for noble altmer, and 1500-2000 for magealmter (save for the Psijjics) of Summerset Ilse.