I stayed there about 2 years ago. Reviews around when I went were really bad and I was nervous. But the room was very clean despite reports. It made me think I came right after the room was remodeled or something. It was also really big It was wide enough to put another bed at the foot of the beds. The bathroom was small not tiny, but small. Breakfast was really simple. Toast, fruit, cereal and some danishes, and the breakfast room doesn't have a lot of seating.
The only part I truly didn't like was parking. It is really tight.
But Del Sol surely has the lowest price for distance to gates in Anaheim if you catch the right rates.