"Yes, this is fun."
Translation:כן, זה כיף.
With nikkud it is spelled "כֱיף". I was taught that that was the "long a" sound like the "a" in "hate" or "bait": kaif (kef for European speakers). But, every recording I've listened to, including here, pronounces it "eh" like the "short e" in "bed" or "wed": kef/kehf, for English speakers. Forvo.com for Hebrew is a good site to hear pronunciation by native speakers, as is this Duolingo site.
Memrise.com, as PandoraaFoxx said, has a Duolingo Hebrew course written by Mazzorano, one of the creators of this course, that works on the pronunciation of all the words in this class.