Sandy Bay is one of Hobart's best suburbs - quiet but architecturally and socially interesting, close to restaurants, cafes, shops, river (with beaches), university, schools, casino, bike paths ... the full gamut of small but vibrant urban life. Activities listed below are within walking distance or within easy reach by public transport.
The New York Times says Tasmania is one of the best places to be in 2018 - see http://www.traveller.com.au/the-top-end-and-tasmania-rank-in-the-new-york-times-list-of-top-52-places-to-go-in-2018-h0gnjy
It offers everything from the world's most interesting and edgy museum/gallery (MONA), to walks in pristine wilderness, to internationally recognised wine and food produce and dining experiences.