@Sandy Franklin Many times the percentage that vacation rental property managers charge depends on their market and competition. For example, in busy resort type communities that have vacationers regularly, I have seen the percentage at 40%! Which in my opinion is outrageous. In your situation you may want to shop around, or give it some time and look at your results over a longer period of time. I do not know the location of your property, but vacation rental prices are adjusted by the property managers to reflect what is going on in the area on any given time. If it is a slower time, the will lower the price and vice versa during busier times. Personally, I would give it some to really get a good feel for the management company (6 to 8 months), and during that time I would call them to check in once a week. Ask questions about the property, last weeks renters, events going on in town, etc. It shows them you are paying attention and you get a good feel for them.
@Account Closed you mentioned a keyless entry, I have seen several management companies and vacation rental owners doing this. This will definitely be the norm in the near future. Each new vacationer gets a new code that works for the duration of their stay only. Codes are updated from a computer in the office.