I highly recommend staying with Julia. She is a very warm and friendly host who is very generous with her time, her house, and delicious bread.
The bedroom is a good size with a very comfortable bed and great pillows. The bathroom and kitchen are very modern and spotlessly clean. The wifi connection is great. The house is a short stroll to Belmont Forum shopping centre, a huge cinema, and a modern library. The bus takes 20 mins into Perth CBD and 5 mins to the airport. If arriving at or going to the airport with luggage the house location has the added advantage of cheaper uber or taxi fares.