I don't think you walk in Canberra, as the city is surrounded by 5 sattelite cities, it is there that people may be walking. Around Hyatt, it is mostly monuments, museums, etc. The hotel is located next to Lake Burly Griffin - the artificial lake, named after the Chicago architect who was Canberra's original architect. Best way to see the city from Hyatt is really on a bike, and the hotel's gym has them (6am-9pm). Otherwise, you need a taxi to get anywhere, but it is not too expensive. Taxi from the airport is around 20AUD and 10 mins. If I only had 1 day, I would go to
National Capital Exhibition. Because it is small, very manageable, but pretty informative. Of course, other main attractions are War Memorial (free tours every 1/2 or hour but may last a while), and National Australia Museum. We spent two nights in Canberra, and really liked it. Within walking distance of Hyatt there is a National Library (free internet), National Art Gallery (has Degas exhibition, and more importantly strong Australian collection), and National Portrait Gallery. Most museums are free. Manuka area has some good restaurants (Belluci's was one), but it is 10 AUD in a taxi. When we mentioned to Sydneysiders that we liked Canberra, they thought that it was time for us to go back, but our impression was good, and people were all friendly, and more relaxed than in Sydney. We need to go back for more museums, also the surrounding area is supposed to be nice. Too bad the sea is 1.5 hr drive away.