Atollo is one of the most beautiful and special places I have ever stayed at. It's hard to even describe how amazing and unique it is. The views across the sea to Panarea and Stromboli are absolutely stunning, and the surrounding landscape is incredibly lush. I stayed for five days and I wish that I could have stayed even longer. You don't even need to go anywhere, I was totally content to just spend time on the veranda watching the clouds.
The cottage is very comfortable, and it felt so cozy even in the middle of a storm. There are thoughtful touches everywhere and I had everything I needed to cook. The outdoor kitchen was a pleasure to use as was the outdoor shower.
I would say that this is a place for a particular kind of experience that's not for everyone. It's about a vigorous 10 minute walk/hike from the top of the road and it's quite dark at night (a headlamp helps!). Some people may feel put off by the fact that it's quite isolated, but if you like feeling in the middle of nature with only the sound of the wind and birds and bees, then this place is for you.
In terms of getting around, I managed to not rent a car, it's about a 40 minute walk down into town. On a lazy night I took a cab to the top of the road and that ran me about 25 euros. With a little planning though it's an extremely rewarding experience and I highly recommend it to those who are looking for something a little more off the beaten path.