Check out the Unofficial Disneyland Information Guide as well. It shows the location of every hotel, rates the rooms, and gives you information on pricing as well. We have used it extensively at DL and at WDW. It's great.
There is a shuttle service (called ART) that travels among the hotels on Harbor BLVD as well, if you end up staying further. We have not found it very efficient going to the parks (it seems to take a long time to arrive), but have used it on the way home to save tired feet. You can purchase tickets at the individual hotels.
Last, although I haven't stayed there, I have heard lots of good things about the Desert Inn and Suites which is right across the street from the entrance. I have heard many good things about Howard Johnson's as well (In fact, we are going to stay there on our spring trip).
If you aren't familiar with the area, many of the hotels on Harbor BLVD are unbelievably close to the entrance. Many also are quite a hike (down by the convention center). Be careful when you choose.
But all of these help avoid the current parking nightmare if you are coming from outside the area. Disney has got to fix that.