All your guests will love the option of waking up to breakfast ready and waiting for them in the morning, especially if they do not need to pay for it! You can do this easily by having a theme every morning, instead of preparing numerous items every day of the week.
For example, on Sunday morning, you can serve pancakes and bacon, and on Monday you can serve scrambled eggs and sausage. You can even have a day or two when you have cereal available to eat instead of hot foods. You may also want to have fruit available every day as well as toast or bagels, because that is something that everyone can grab quickly if they need to leave early in the morning.
If you cannot support offering free breakfast at the moment, you may want to consider raising your prices a little to offset the cost. None of your guests will mind paying a couple of dollars more for each night of their stay if they get to devour delicious food in the morning.