Short Term Rental - Analyze property - Time spent

[Torrey Taralli]

I currently own a single STR that I rent through Airbnb and VRBO. I'm looking to add 2-3 more properties this year and I've gone through various calculators to analyze my deals. But, one thing I notice is none of these calculation tools account for time spent on a property. Here is a very simplified example of what I mean:

Option 1: Single property Gross 100K net 30k 

Option 2: Two properties: Gross 100K net 40K 

Now, of course you you net more on option 2 but now you need to manage double the bills, double the bookings, double maintenance, cleaners etc... Has anyone built time spent into their calculations and if so, how did you determine this? 

Thanks in advance!