Long term lease before Visa approval Portugal

Looking for advice/options
I have my visa appointment in less than 2 weeks. I’m in need of proving residency in Portugal and will need a signed lease agreement for long term but don’t know when/if I’ll be approved.
I don’t to be pay for a lease in Portugal before I’m approved.
Some people suggest a long term Airbnb because you can update the dates without being penalized if it’s in advance, but I’ve also seen that long term Airbnb isn’t always accepted.

This kind of question might be better asked in AFIP on FB as there is a lot more experience with D7 there.

I would note that 2 weeks before your appointment is … IMO probably an unrealistic amount of time to attempt to secure a long term lease - or indeed accomplish anything at all besides ordering a coffee - done in Portugal.