What are some Airbnb Calculations to Consider?

[Eric Piccione]

We are going to house hack our first home and make it into an airbnb downstairs. We would live upstairs in our lair, while the short term tenants stay downstairs. 

What are some numbers to consider that make these homes a no brainer? 

Would a 2 story home, with 4+ br and an undermarket home be all that is necessary? 

Are there other factors to consider in the Airbnb space? 

Thanks in advance everyone and stay awesome!