Tried the search function only came up a lot of threads re: connecting through Lima etc etc and not where to stay in Lima

Could anyone advise where is it the best place to stay in Lima? I am currently looking at:
1) Radisson Hotel Decapolis Miraflores (Avenida 28 De Julio 151
Miraflores, Lima) or
2) Casa Andina Miaflores Centros (Petit Thouars 5444)

I am unsure as to which area is the best for tourists in terms of convenience and things to do. Obviously both hotels vary in price quite substantially but both of them seem quite good from its description.

Any alternative suggestions will be grately appreciated but I haven't got the foggiest about about Lima seeing I am a virgin traveller to the South American continent. It doesn't help that the guidebook I've been reading doesn't really paint a clear picture what Lima has got to offer.

Thanks in advance for helping this rather confused FTer.

p.s. Anyone know what the LAN's lounge in LIM is like? Any specific OW Emerald Lounges?