Thanks for the info, a constant temperature of 68F would be perfectly acceptable to me.
Did you have a room on the north side, with a view of
Disneyland? I wonder if the south facing rooms tend to be hotter because of the greater sun exposure. I think what I might do next summer, if there is a good rate at the Sheraton Park, is pay the extra $ for a north facing room, under the assumption it will be a bit cooler. Also, as
@SteveH points out, room temperature may only be a problem during extreme heat waves.