My question is, when do I start actually advertising? 

I just sold a multi unit property in Charleston SC.. knock on wood funds on Monday.. for 1.3 mil.. and I let them advertise the units they were all vacant ..

If you aren't offering anything, the buyer will have to pay for it, which will impact potential offers and negotiations.The bigger question should be - how do you plan to advertise?

Everything is Negotiable whether it's bank owned or not, even if it states "as is" in the advertising you should still ask for an inspection/due diligence period.

@Philissa Gilliard I think this depends on the individual and who you're targeting to do business with, If someone contacted me wanting to conduct business and the only digital footprint they had was a Gmail account or something similar I wouldn't respond assuming it was fraud or someone who didn't have their business together so dealing with them may not be as professional.

One time I had a lady give me a nasty call because I sent an advertising letter to the trust that was technically the owner of her home.

If not you need to account for turnover costs (Cleaning, painting, minor repairs, advertising, etc.).From what you have provided it appears worth looking into the property more. 

I occupy 1 unit and advertised the other 2 for rent with a "no pet" policy.

Generally speaking, the market is up, so why would they advertise for sale at 90% of appraised value when they know a buyer is going to come in below ask anyways?

The Internet has made it easier for you to advertise your properties, so being located on Main Street is not as vital as years ago.C properties have higher cap rates than B and As because of their age, and the fact that they contain less appreciation, unless it is forced.