These are the types of properties I'm now targeting.I'd imagine the biggest challenge you'll run into is finding multi unit properties.

We have taken over LOTS of occupied units with under paying tenants.

You have to be super cautious though when looking at opportunities since some may come with unexpected circumstances such as major repairs, fines for illegal units, etc.

I am showing 2-4 unit properties all the time here in Phoenix and I can send you the recent closings and listings I have been working on.

Even if one unit is vacant, others can keep cash flowing​​.Short-Term Rentals in Tourist Areas:Think vacation homes or properties in bustling city centers.

I use the individual stackable units when I have space restrictions.

I think everyone's situation is different, and when one crafts their buy box, they need to consider their current family and finances.For me, when I started, I wanted to buy 2-4 unit distressed properties in neighborhoods I wanted to live. 

In the 65 units we manage we have both. 

Hey @Guang Yang, no need to use any kind of extra stuff for a single unit like @Patricia Andriolo-Bull said.Just use the built in tools on VRBO and AirBNB and you will do just fine.

A good broker should be able to tell you a range of rates given specific criteria if you can tell them what kind of deals you are exactly looking at (ex. in central Boston, 10-20 unit, 90%+ occupancy, 30% down).