That's #1, get that thing up so you can make moves without needing your mother to cosign. 

The biggest thing now is figuring out what strategy actually fits you best.

Would be glad to talk more about the area!

I help line up lots of financing for STR so I'd be happy to walk you through the process and what is expected.The drawbacks of STR is the management of it. 

Lease up Nov 2026 

In Spain, this is usually seen more as a barrier as people rather would invest in individual units (less purchase capacity needed), but by rethinking the setup up it matches the criteria of a multi-family deal.

The reality is you have to pay for services like this and be prepared to eat the cost if the deal doesn't pan out.

I don't know the laws in Australia, but in the states, you can usually get a low down payment loan if you will live in the place and you can do this up to a 4 unit and rent out the rest.

This is the max that the lender can bid up to. 

The tenant in common nature of the ownership would tell me that you would only be related to your mother in laws portion at the most.