There is no such thing as an LNF rate.

LNF refers to the "Look No Further" guarantee offered by Marriott. To find out how it works, one needs to look on the Marriott website under "Best Rate Guarantee". Once you read the parameters of the program, you will have an idea of where to look for (possible) lower rates.

To locate lowest rates on the Marriott site itself, one can start with codes found here: http://www.flyertalk.com/forum/marri...ion-codes.html
And yes, you have to enter each code separately.

Only after you find what you believe to be the lowest rate should you post in this thread - and to help you, people need the specific hotel you want, the rate at which you are currently booked, and the dates of your stay.

Anyone posting with comments like "find me a cheap rate for Podunk" is not going to receive a reply, for no one can possibly know what your budget is, or which property in which you have an interest.