Hello! my husband and I are going to Peru next week as part of a humanitarian trip. We are spending 4 days in lima before we head to cuzco. We have a travel book but it lists SO many things to do/see while in lima and i was just wondering if you would be willing to recommend some of your favorite things. Our hotel is on Plaza San Martin so I figure we'll spend a day there? I don't want to waste any time, please help!