I originally went to uni interstate and loved that uni for its modern ambience; however I spent a bit of time at Sydney Uni before I moved here for a certification. I would say the sandstone there is beautiful. Love that building, and the ample grass space to sit and study outdoors. I also enjoyed productive times in the Fisher library at this uni also.
Macquarie University Campus is just great- not so much for its architecture as much for the beautiful ( and huge) outdoors, with lots of grassy areas, litlle parks and beautiful campus hub with so many things happening daily. Library is recently renovated, and trere are also few childcare centers, also used for Students to gain there experience. Huge sports and aquatic centre offers something for everyone, from 1 to 71 years of age.
It pains me to say this because I went to UTS, but Sydney University has one of the best and most relaxing campuses in Sydney. There is so much grass (compared to one measly patch at UTS) and it is so big!