My daughter and I enjoyed our time at La Luna Blu (and in eastern Crete) very much. The premises are nicely located in the hills overlooking Ferma, with rocky mountains in the back. We had a car and used it quite a bit to get to know the eastern part of Crete and to go to different beaches and canyons, but you can also buy groceries just a few hundred metres away, in a local supermarket, which was sufficient for basic stuff. There are several beaches within walking distance, and one was particularly nice and clean, and not organised, thus never crowded. There is also a good taverna (and in my opinion one with better food than we had in some of those tavernas in more touristic areas around Ferma) just down the small street that leads to La Luna Blu, next to the main road, but is has a really nice and quiet garden in the back.
Iris and her family made us feel very welcome; it was more like staying with friends than anything. The flat was very clean, well equipped (it even had AC in the bedroom, although I would have preferred a ceiling fan), and we enjoyed early morning cups of tea and dinners on the litte private terrace in front of the flat, as well as hanging out or reading in the provided deck chairs. Delicious grapes, ready to be picked, grew above our terrace (and our heads, within reach), which was a real treat.
Iris and her family were very helpful and had quite a few good suggestions where to go. Communciation was easy because they all speak English very well (to my regret, my Italian is poor).
We had a great holiday in Ferma, and La Luna Blu is definately a place to come back to in eastern Crete.