Maybe you think one backsplash would work better than the homeowner's preference or a modified kitchen layout would improve resale value. 

If the tenants agree to modify their existing lease, that's up to them.

I used a spreadsheet designed for analyzing large multifamily properties and modified it for the motel.

All mine follow this, with a modifier value for unique special features like certain lake front etc.. 

That is if there is no record on the platform of the request.Otherwise you can modify the reservation to add the week and do a payment request for the extra cleaning or bake it into the extra week charge.

They would also allow you to modify the rental agreement with only 30 days notice.

Generally, these bulk buyers might offer to modify with a balance at, or slightly above/below current value, but not 1/3 of value.

You made a verbal offer to extend the lease you sent over to sign, if they are unwilling to sign the new lease they are under no obligation to do so but you don't have to modify the lease if you don't want to. 

These are spaces that go for around $1,000/mth modified gross and not as nice as your property, but still a nice small office building.

They are also very flexible and can be easily added on to, or interiors can be modified without compromising the integrity of the structure.