The Grass Roots Music Festival is held at the bandstand (next to the Japanese Gardens) at the Brisbane Botanical Gardens in Mount Coot-tha, Toowong.
The address is: Brisbane Botanical Gardens Mount Coot-tha, Mount Coot-tha Road, Toowong, QLD, 4068
Put the address into google maps for directions -- http://maps.google.com.au/
To explore accommodation options close to the event, visit the event page on the Trivago website http://www.trivago.co.uk/brisbane-44311/events--festivals/grassroots-music-festival-3387372 . For a comprehensive list of accommodation option visit the full site at www.trivago.com.au.
Here is another link to the venue: