I did not see too many hostels in Wuxi but just outside the city. I would not recommend hostels here other then when you are in desperate need. The staff mostly do not understand or speak english and the rooms are not the best. I also see that most hostels in China just accept people with a chinese passport and creditcard.
You'll get a recent hotelroom for 10£ or 14$ if you use a service like this one>>> If you go direvtly to the hotel the prices, usually, gets very high so I recommend you book it before you go to the hotel. You are able to cancel the booking if you suddenly got other planes. I saw it could also be difficult finding hotel staff that where able to speak or understand english. You do yourself a good service by getting some friends down here. Trust me you could need it. Like when you shall find food, getting a train or just a hotel room. I found some hotels with english speaking staff and are collecting them on a page here.
Wuxi Xvxiake International Youth Hostel offers free wifi, bike renting, ac, bar, restaurant, shop, library and other things. If you just need to spend one night this could be a good option.
Xindongfang hostel is a hostel where you'll need to be chinese citisen. If you want to book here you need a chinese creditcard and passport. I also doubt if they speak or understand english.
A night picture on Motel 168.Good breakfast and nice environment. I would recommend it.
Double tree hilton got english speaking staff And a good service.