Where to stay in Shanghai?

We would like to spend our first 5 days in China in Shanghai but we are having difficulty deciding on accommodation. We know we want to stay in the French Concession and probably in the Eastern part of it.

Trip Advisor and various blogs I have visited all have some wonderful suggestions but some of them don’t reply when you contact them about availability.

If anyone lurking around here has any suggestions, we are open. Noting too expensive (can spring for AU$130-150 if we have to, but prefer something in the AU$50-80 a night range). We’re all ears folks!