If you are at the Burbury it is an easy walk (i.e. 10 mins or so) to either Kingston or Manuka with lots of eateries. We prefer Kingston. China Plate is a good Chinese/Asian and very popular with the pollies but pretty cheap and very friendly. We don't like Me & Mrs Jones much - a few ordinary experiences. The Belgian Beer House has great mussels, Santa Lucia is good for Italian, Chaing Rai is OK for Thai. There are lots of others as well. A but further is the Kingston Foreshore - restaurants there as well.
Manuka has a swag - Kopi Tian is good, Bellucis we can take or leave, Le Rendezvous is one we do not like - it seems to have gone off (and flat tonic in the G&T to boot).
Close to the Burbury - you may be able to sign into the Press Club as its bar meals are OK, we have had tummy upsets after the Rydges bar food but there is a restaurant, haven't been to Brassey House.
We walk to all of these for dinner so not far at all
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Ostani has a new dinner menu, just been there tonight, a bit of Minister spotting going on. Pork cheeks were pretty good! I had a decaf expresso as last time it was 'boing' when I went to bed. Tasted OK.
Hope this helps.