Lee's brother, Bryan, said his brother and mother made the trip to Louisville and "really enjoyed" the weekend and getting to see the school.
"Marcus loved it and my mom loved it," Bryan Lee said. "It's Louisville. I mean I hate to be that generic but it's Louisville. They said the facilities were amazing the amount of support was unbelievable."
The 6-foot-9 Lee, a prospect from Antioch (Calif.) Deer Valley High School, is also still considering California and Kentucky.
Lee said his mother was impressed more with the academic situation and the ability for the Cardinals' staff to help her son improve.
"There are so many things that people don't think about that matter," Bryan Lee said. "Some people will say, ‘Well, it's cold there.' It's cold everywhere. (The mother) was so impressed with the academic support and the opportunity to get better.
"Seeing Gorgui Dieng and how much he's improved. She really loved what Louisville has done with Gorgui."
Another factor in Louisville's favor is the families relationship with assistant coach Wyking Jones, who is the point man in the recruiting process.
"He's doing a great job," Lee said. "I had known of him (before the recruiting process with Lee started) and when he started recruiting Marcus, I went though my network of guys and knew a few guys that he coached."
Lee called off visits to Indiana and Duke but is still expected to make a visit to Kentucky on Oct. 13. UK will make an in-home visit on Sunday, while Louisville is expected to head to the West Coast to visit the family soon.
He made an official visit to California on Sept. 1.
"Marcus is at a good spot now," Bryan Lee said. "He just felt like he needed to (cut his list) and focus on those three schools."
A four-star prospect, Lee is ranked No. 37 overall in the 2013 recruiting class.