Well, I think we all agree that communication with our guests is the key.
I also belive that customising the experience and being proactive with the guest is important.
Don't make them have to ask.
Provide everything you yourself might need to ask - if you would have been the guest.
A good way to do that is to stay there yourself - as a guest.
That gave me some rather good insights on what was needed - both in equipment and information.
And also - ask them. When they checkout - for some ideas on what might be good.
They will always have something of value for you.
Good luck out there!