I cannot remember what i did for our 5th but this year was the 100th year for our house. I had a special all year to celebrate - Happy Birthday 35 Walnut St - if a guest booked 3 or more nights, the 3rd night was $19.12 + tax. The 4th night went back to regular rate. IF you can afford to do it, you might do a Happy Anniversary @ $20.07 + tax for the 3rd night. I actually got a couple reservations because of that rate. One of them was for a family reunion that the first brother booked 3 nights (did the math and I was cheaper than the hotel where the reunion was) BUT his brother then made a reservation for 5 nights - and they took the 2 rooms that share a bathroom!!! Second brother was thrilled when I tol him I had already made the adjustment to his 3rd night rate when I called for his cc#. He also gave me a lovely tip.
I figured the $19.12 would cover breakfast and I was not changing the sheets until after the third day so it would not hurt too much to do that rate. I had at least 5 reservations from it and those mentioned above would not have happened without it. Plus I know THEY will be back - family ties here.
I just updated my specials page. this year to celebrate the 150th birthday of my State (and the 161st year of my City's incorporation) the 3rd night is going to be $18.63 + tax and every guest between Jan 1 and June 20 will be entered in a drawing for a free night in 2014 plus more goodies. (IF it works to bring in more guests, I may do another drawing for the second 6 months - new jar)