My fiancée and I loved our stay at Sleepy Dell Cottage. It is located in a very private location that is set back from the road, nestled amongst the trees. We woke up to cows and kookaburras each morning!
The cottage had very basic supplies (e.g. dishwashing liquid, laundry powder and hand soap). We had to purchase - and have now left for you ;) - additional supplies (e.g. shower gel, salt/pepper, chopping boards).
Mobile phone reception doesn't reach inside the cottage however there is wifi (only available for minor surfing - not enough for downloading movies so be sure to pre-download before you arrive).
We would definitely recommend bringing your hiking gear for the Dial Ranges on the doorstep. Also Cradle Mountain was a 1.5hr beautiful windy drive away so if you leave the cottage early enough you can get in great day walks up there (come back before dusk as there is a lot of wildlife on the roads).
Overall a 5/5 stay in this adorable little eco-cottage.