This spot is incredible! From the treehouse, you can look out over Wellington. The space is so incredibly comfortable, and there's actually great wifi! I wasn't bothered at all by a lack of kitchen, there are restaurants and cafes within a block. I walked to downtown a couple times, but the bus is also super easy with frequent service, stopping right in front of the place.
I highly recommend you stay here, if you are looking for a beautiful, comfortable place during your visit in Wellington.