Somebody knows if there is a cheap hotel room close to Anaheim convention center???

There are at least sixty hotels surrounding the convention center and Disneyland and they start around $65 a night and go up and then you can also use Airbnb

Depends on what you consider cheap but the Anaheim Hotel (older but nice) is about a 7min walk. You pass a Starbucks and some food on the way and it is directly across from Disney Way.

It is according to when you go and how early you make your reservation. The Alpine Inn is a cute little place to stay. It is right across the street from the convention center