The France international has been allowed by the Primera Division outfit to train with Serie A giants Milan prior to making his loan move official in the January transfer market.
"I've had an excellent impression of the place," Rami told acmilan.com. "I am delighted to be here and to be at Milanello.
"I am in the best place to train in the world. I am feeling good.
"I am very lucky that Valencia have given me permission to train with Milan so that I can adapt in the best possible way to my team-mates and to the coach (Massimiliano Allegri).
"It feels as though I am part of a family here."
Rami had expressed his wish to leave Valencia before being excluded from Los Che's first-team squad last month.
The 27-year-old publicly criticised his team-mates and club coach Miroslav Djukic in a radio interview.
"I have a strong character and a winning one," Rami said. "I think I can physically help this team and give my contribution in every sense.
"Milan is a great club, it has a lot of character."
Rami will have to wait until January to make his first competitive appearance for the Rossoneri.
Milan have endured a difficult start to the campaign and lie 12th in Serie A, 13 points behind league leaders Roma.
"We are in the same position as we were last year but I'm sure we will recover," Rami said.
"I just want to help the team do well as soon as possible."
Rami joined Valencia from Lille in January 2011 and scored five goals in 74 appearances for Los Che.