Marin is currently enjoying his first few days training with his new team-mates after the summer break.
However, the midfielder's keenness to settle with the west Londoners saw him familiarise himself with the club before pre-season began.
"I am now here for three weeks and I think I know everybody [who works here] now," Marin said.
"I am happy to start team training now and I feel good. It was the first time we trained together with the ball, we did a lot and it was good intensity.
"The first two days we have only one session a day and then it starts with double sessions."