I have double checked when I was booking, and it says 'The room is upstairs in front house with stunning sunset view, and with private bath'. However, the room available to us is the one downstairs. we understand because the people from the original room want to extend, but the price of the upper floor room is higher than the lower floor on Airbnb website and we paid the higher price, the owner should let us know earlier so that we can cancel the booking beforehand.
The night we stay, we understand there are 9 people in the house, but we couldn't sleep until late midnight because of the upstair noise, and there is someone cooking at 5 am in the morning. We couldn't get enough sleep and we have to cancel our second day plan.
Overall, it is a good location and a low price if you go to Dandenong, the garden also very beautiful.