Here is the first ever Peruvian Google Maps mashup to feature on Google Maps Mania. Being one-eighth Peruvian myself I hope it is only the first of many.
Hospedate.pe is a Google Maps based guide to hotels in Lima. The map allows you to search for hotels by location and order the results by price or by the hotel's rating.
If you click on a hotel's map marker you can get details about the services provided, the address of the hotel, a link to the hotel's website and view the hotel's rating.