(Due to popular demand:) Below are some of our favorite experiences from both trips we've made to Iceland. Each time the trips were for about 4-5 days and we honestly accomplished so much during that time. These are some of my "must-see and must-do" recommendations - so far, South Iceland is where we've spent most of our time but next time it'll be the north for sure!!
^ THE GOLDEN CIRCLE: This is something you could do in one day (at least we did). There are some really cool sights on this route. The Kerid Crater Lake is awesome (!), so is Gullfoss waterfall, and then the Geysir that shoots water out from the ground is so cool. There is also the Thingvellir National Park on this route which had nice views.
^ THE SELJAVELLALUG POOL: It's just super awesome in the middle-of-nowhere mountains! It's the oldest man made one, and you will want to stay in it pretty much all day. Bring your own towel and bathing suit! (You can see the difference between when we went in November vs April! lol)
^ STOP AT ALL THE WATERFALLS: Skogafoss is so great and breathtaking, and so is Seljalandsfoss because you can walk behind it, super incredible feeling. You will get pretty wet just fyi haha - but it's worth it. And my absolute favorite waterfall is one that gets semi-overlooked but in a good way because less people know about it. You can actually walk to it from Seljalandsfoss, it's called Gljufrabui. (It's inside of a cave) Again, you will get pretty wet. Again, totes worth it :)
^ RENT A CAR (AND A CABIN)! I can't imagine not having the freedom to go wherever you want and stop whenever you want when you're in Iceland. I wouldn't recommend doing a big "tour bus" style tour...they just don't seem as personal and intimate at all. There is only one main highway in Iceland (Route 1) so it's easy to drive and get around there. And for the cabin, I mean...look at how cute and isolated and perfect it is. Our cabin slept 5 people which was perfect for our group! It had a kitchen (with everything you needed), great shower, and amazing views. We stayed at these! And the first time we went to Iceland we stayed at this lodge! Both perfectly located for all your Southern Iceland activities :)
I am more than happy to answer any specific questions if you have any for me! Just reach out to me and i'll give you any and all insight I have about this amazing country!