Donna and David are a very helpful, thoughtful couple. Donna gave us lots of tips on nice vegan restaurants. David's kitchen and appliances are awesome! The bedroom/bathroom are clean and comfy.
Location is great as well if you are in Melbourne for a city tour - lots of good restaurants, comedy clubs, and museums/sightseeing around. Not to forget that the Market is just around the corner.
Right now there has been a huge construction site that would probably disturb those who want to sleep until late. That said, it's not David's fault, as he and Donna are always very silent and respectful privacy-wise.
I also recommend to check David's shop downstairs - prices are fair, and there's a lot of useful stuff there.