"I had already been up there before, for camp and a game last year, so this was more about just spending time with coach (Bush) Hamdan and getting to know him even better than I already do," Williams told Dawgman.com. "I came up for the Cal game last year and I really liked the gameday atmosphere there.
"Coach Hamdan and I have a really good relationship and it's only getting better.
"It was fun to watch him coach and work with the guys that were there. He has his ways of coaching and it's really focused on the details, things like how you come out of your break, where your hands should be, where your eyes should be, stuff like that, and it was fun to watch him go through all of the drills with the guys."
Williams said this past weekend won't be the last time he's in Seattle this year either.
"I'm definitely planning on coming back for a game this fall," Williams said. "The one I'm planning come back up for is the USC game. I think that game is going to be a great matchup and it should be a really great (gameday) atmosphere again."
In addition to visiting Washington for a game weekend, Williams said he wants to get to Cal to check in on them when they host Stanford for their annual rivalry game.
"I just love the game of football and being around it and that is always a great game," Williams noted.
Williams currently holds six offers -- Washington, California, UCLA, Washington State, Fresno State and USC -- and he's widely considered one of the top wideouts in the 2018 class, being given four-stars and currently ranked as the 15th-best receiver in the country according to Scout.com after totaling 34 receptions for 620 yards and six touchdowns as a sophomore last season.
As far as when he wants to decide and what he will be looking for to help him make his decision, Williams didn't hesitate.
"I will probably decide next summer," Williams said. "I'm not going to rush into anything, but it'd be nice to be done with recruiting so I can focus on my senior season.
"As far as what I'm looking for, the biggest thing is my relationship with my position coach. Is it good? Is he someone I feel like I can trust and do I see him helping me improve as a player and a person.
"I also want to have that family feel wherever I end up. Is it a place I could see myself for the next four years of my life and if football goes away, for whatever reason, is it a place I see myself staying the rest of my life and are my teammates and coaches still supporting me even if I'm done with football? That's another big thing for me."
We'll have more on Williams in the future and we will update news on him as it happens.