How should I determine what to charge rent for a guest bedroom?

What is the battery life? 

Instead of having the tenants split the costs each month, it is just easier for me to do it all and charge rent accordingly. 

When I went down till then there was no water and I just realized that sump pump in corner wouldn’t run without electricity and there was no battery but I assumed that electricity will be back and it will be fine but within half an hour before I left basement water started overflowing from sump pump.

Tesla is building their new semi-truck factory next to their battery factory, Microsoft, Apple and Google are investing millions into data centers.

Does it have battery wall to power at night. 

I once spent all night pumping 3 feet of water out of a basement, in a monsoon, using a DC pump attached to my truck battery because there was no electricity to the house and the sump pump couldn't work.

They provide security, parking, EV chargers and concierge service and I don't have to worry about the roof, fence etc as it's covered by the HOA insurance policy and is urban so it's in the city and walkable to everything which is geared better for medium term rentals unlike a house which means I was able to time my vacations towards the end of the tenants lease more easily.

Also lots of small things filter & smoke detector batteries need changed, hardware is missing from one cabinet.

I just came back from a vacation to GA and heard about a Mega EV and EV battery plant under construction outside of Savannah that's opening up in 2025 that's expected to employ 8100 people.