It would be great if there were other options the guests could do to communicate in case they're not able to call an Australian mobile phone or connect to the internet during the time of arrival/check in. Maybe a post/sign in the front office would help instruct guests if nobody is able to answer the door. Nonetheless, if you walk a little near Victoria Market, you'll be able to get free WiFi. Apartment location is also near the Free Tram Zone which is very convenient. Our stay was very pleasing and the hosts' communication was impeccable via Airbnb website. Good value for money for a group stay. Thank you. :)