It is unfair to say Lima lust lacking, but there really isn't much to brag about it. Outside Miraflores and a few landmarks, it is just a large city clinging on to a cliff and constantly bombarded by dust cloud blown from a not too distance desert. To many tourists, Lima is only a quick stop before they head out to other interesting parts of Peru.
Well, lucky for tourists, you can find most what you need inside Miraflores district, so you don't and shouldn't have to wander off too far. The focal point of Miraflores is Parque Kennedy. From there, you can catch some open top bus tours that bring you to Centro Historico and other parts of the city. In my opinion, the highlight of the tours is the astonish Monasterio de San Francisco that has underground catacombs with estimated 70,000 burials. There is also an incrediable library inside the Monasterio housing antique texts, some dating as far back as the period of conquistadors.
Back to Parc Kennedy, there are numerous boutique shops and stores surround it. In the weekends, artists come to showcase and sell their works. In addition, there is an array of awesome bars and restaurants. To me, the inexpensive but delicious Peruvians food is the only thing that saves Lima from eternal boredom. At the end of the day, perhaps, you can follow McBalta Diagonal to the ocean front and walk along the cliff to catch some amazing view of sunset.
Enough said, here I come Cusco and Machu Picchue!