If you have a valid user ID from SAP then you can download “SAP HANA Studio” from SAP Service Market Place with the following address

service.sap.com 

Support Packages and Patches –> A – Z Index : H –> SAP HANA Platform Edition –> SAP HANA Platform Edit. 1.0 –> Entry By Component –> HANA Studio –> SAP HANA Studio 2

Select the operating system version you want to download and continue.

Download SAP HANA Studio