Oh boy - I debated posted this since I don't want to worry you close to your vacation but someone on another board asked the same question (here is link:
http://laughingplace.com/default.asp?WCI=MsgBoard&WCE=T-44915-P-1&Refresh=0603150759) and this was my reply:
I am usually a fan of Embassy Suites, but not this one. I stayed there once and it almost ruined my trip to
Disneyland! Now, to be fair, it was 5 years ago so things may have changed alot. It was the most run down ES I have every stayed in. Lamp was broken, furniture had rips. But the killer for me was the heating/cooling system. We were there in May, which is quite nice weather in southern California. Our room was stifling hot so I called the front desk and asked how to turn the heat down. Guess what, I was told I could not!!! They said that it was one central system for all the rooms and since a guest had complained that they were cold, they turned up the heat!!! So we got to bake!! I have never heard of a hotel with this problem! Perhaps, it has been fixed but I would certainly make sure before you go.
That said, the lobby was very nice - great indoor pool. As always, the breakfast and happy hour is plently of food and filling!
I guess my biggest piece of advice is to ask if the hotel has been renovated in the last several years and if they have individual temperature controls in the rooms now. It is about a 10 - 15 minute drive to Disneyland - they did have shuttles when we stayed there.
I really want to stress that this was 5 years ago - it is highly likely that Embassy Suites has renovated this property and/or done some maintaince that had been deferred. Give the hotel and call and ask them some questions.
So sorry to have to post a less than great opinion.