The conference centre has a hotel on site: http://www.dayshotelmanchester.co.uk/manchester-hotel-rooms/
The Ibis on Charles Street is really close to the conference centre itself http://www.ibishotel.com/gb/hotel-3143-ibis-manchester-charles-street/index.shtml
The Manchester City Centre (Portland Street) Premier Inn is nearby – their site is at http://www.premierinn.com but you have to search for the actual hotel.
It looks posh but checking out their weekend deals they’re actually comparable to the others listed here. http://www.britanniahotels.com/hotels/manchester
YHA Manchester is modern and has a good reputation – ideal for a budget option! http://www.yha.org.uk/find-accommodation/north-west-cities/hostels/manchester/index.aspx
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