Me and my partner (we are late 20s) have very much enjoyed our holiday in marni. The hotel complex itself is very well maintained with beautiful plants and flowers. Although built against the mountain side it is a bit hilly overall. Not a problem if you have no difficulties in walking.
There's 3 pools. All would be a good choice to settle at.
The restaurant /pool bar gives you a small but varied choice. Found the pizza adequate and good value for money. I would probably head in to koutouloufari village (on your left as you leave) for a better quality dinner. However good for lunch or a snack.
Our apartment was a maisonette which was a very good size. The view of the sea was great and not far from the main pool. Was glad we choose this type of apartment. The bed was very comfortable and linen and towels to a good standard!
The rooms all have wifi accessibility which was a great thing and meant we could research our trips out!
I would say that the beaches near here are a bit of a miss. Over crowded and not very picturesque. I've heard the beach at vai is lovely if you want to go further afield. 2hrs east.
All in all, we were very happy with marni village and would consider coming back (once we've seen a bit more of the world!)