If they fail to pay, then you can consider taking them to small claims court or filing with a collection agency. 

There are a lot of opportunities to keep it full while negating the full time management/customer service aspect.

I just checked my lake house because we are considering an off-market house down the street for STR. 

We're also considering the idea of doing short term during the summer season and mid term the remainder of the year.

Monthly Expenses: I’m accounting for rent, utilities, and cleaning supplies, but are there other hidden costs I should consider?

If you’re self employed (or can be) with no full time w-2 employees outside of you and a spouse you should consider the solo 401k instead if SDIRA.

I’ve been considering their service but wanted to see if anyone else has had success with them.

Maybe exploring options like a home equity loan or a personal loan from a credit union could be worth considering.

.$100k for a 2/2 is high for the City of Detroit, unless at least Class B.So, you should take time to understand the NEIGHBORHOODS in the City of Detroit.You might want to follow the "Deep Dive" series we're doing on our BiggerPockets blog about Metro Detroit cities, City of Detroit Neighborhoods and comparing Metro Detroit to other hotspots investors usually consider: https://www.biggerpockets.com/member-blogs/3094/99854-deep-dive-into-metro-detroit-cities-ecorseContact us with any other questions:)

If this isn't an attractive alternative to your business partner then you might consider changing the ownership structure or operating agreement as one of your options.