You would essentially sign a lease on an apartment or home that is for rent, and sublease it on Airbnb.

This is almost always a bad sign.

Depending on the investor, you might have some luck if you have a signed lease and 3 months of rent seasoning at the desired rental rate.

I'm not sure who you're working with but the fact they are showing you their par pricing is actually a great sign. 

I will list his known assets at the bottom.Here are my two questions: If the documents I sign show him as personally guaranteeing the loan (specific language below).

Anyhow, for any new investors out there, please pay attention to this before signing a contract with any property management companies. 

You should also request an estoppel so the tenants can confirm that the info you were given in the lease is still current and correct (you never know if the owner gives you an old lease with old info, and maybe the tenant has actually signed a more current version). 

If the plaster is intact (not crumbling, cracking or showing signs of significant damage), it may be safe to leave.

Maybe do a bi-yearly unit inspection and look for signs of damage.

They said they signed their lease on the 15th.