Which hotel near mtr if going to disney and ocean park, hong kong?

I have no idea of your budget. But the Landmark Mandarin Oriental Hotel can be a good choice. Although it charges a little high, it is so close to Central MTR Station. Nearby you can easily catch bus no. 629 to the main entrance to Ocean Park directly. To Disneyland, you can walk to HK Station to take Tung Chung Line and get off at Sunny Bay, where transfer to the Disneyland Resort Line to get there. You may try to search it online and book it.