Carlton is north of the CBD. Very close to Melbourne University where there's quite a number of Singaporeans studying.
Rental price - Close to CBD, Close to Uni, thus leading to higher prices.
For current rental price & property price, please do a search at
www.realestate.com.au or
www.domain.com.au
Pretty good area - Depends on what's your criteria of pretty good.
For students, yes its good for them as its close to the university.
For couple without kids working in the city, yes its good for them as its close to work and other amenities.
For me (couple with kids, not working in the city), No way I'll leave in Carlton or anywhere else close to the CBD.
1) Endless traffic and trams travelling along the roads.
2) Kids have not much place to run outdoors except the parks
I prefer the peace & quiet of the southeastern suburbs..
I'm guessing you spoke to an Melb Uni Graduate..