This is a fantastic spot, completely unique. We loved our stay however don't expect five star luxury. It is what it says, a room in a tree albeit very well constructed. You will have to leave your room and walk outside down a round staircase to access the bathroom. Could be quite unpleasant in cold or inclement weather.
That said if you want to try something a little bit different then give the treehouse a go. Cork city is fantastic. A real foodie heaven.