HI ,
Since you have only Two ESXi hosts , you will be using standard switch , let me know if there is VDS .
Answer to Your Question - You can Access both ESXi host from Webcient / vsphere client .
Additionally if there is not very complicated any configuration for vCenter , you can deploy new vCenter and configure Both Esxi to that .
Let me know your VC session , so i can help you with more details to reset password / any other doubts .