So many things I want to comment on in this thread.
In no particular order:
To the person that said I use an S-Corp instead of an LLC. They are one in the same for tax purposes and for liability purposes. There are only two ways to be taxed from the IRS's perspective. As a disregarded entity (i.e. the entity itself does not pay taxes, but passes them through to the owners directly) or as separated from it's owners. An LLC can be taxed in the exact same fashion as an S-Corp, C-Corp, Sole Proprietor, Partnership, etc. The IRS has a form 8832 which is how the entity elects to be taxed. So having stuff run through an S-Corp over an LLC is irrelevant.
Owning a property in an LLC vs. personal ownership. For single family homes, I believe LLC's to be cumbersome ownership structures. For Multi-Family LLC's make sense because if you're using commercial loans you'll be refinancing every 5-10 years. Refinancing in a different name than currently titled is cumbersome. So put it in an LLC, use commercial loans and never look back. The simple answer is if you are using residential loans you are better off titling in a personal name and if you are using commercial you are better off titling in the entity name.
If the property you are buying is not currently stabilized, you will not be getting PERMANENT financing through Fannie/Freddie on the commercial side. Expect to personally guarantee the loan until the property is stabilized. (This is not a bad thing as many banks, while requiring a personal guarantee, will also lend at higher LTV's than non-recourse financing).
Know when to expect Interest Only as appropriate and when not to. As a lender, the biggest red flag for someone you know doesn't have very much experience is when they ask for terms that any seasoned professional knows are out of market. Excessive I/O, out of market amortization schedules, out of market interest rates, etc. If you go to a lender with expectations that are WAY OFF they won't take you seriously so you'll have more difficulties getting financed.