We ended up staying a month in the Treehouse, and had a wonderful time. It's a very pleasant, tastefully decorated apartment at an excellent location - we'd gladly have stayed several months longer! The house has all one needs to live and work in comfort. The bird life in the tree and around the building was an extra special treat, as was the proximity to both Brunswick Street and the Carlton Gardens.
Communication with Rebecca went very smoothly. I warmly recommend this host and her apartment.