Geography and Population (source: wikipedia)
Rhodes & Mallorca offer similar landscapes and altitude of mountains;
Rhodes is smaller, but hilly all over the island, and less densily populated than Mallorca:
Rhodes Mallorca
Size (km²) 1.408 3.620
Population 115.000 407.000
Person / km² 82 112
Length N-S (km) 68 78
Length E_W (km) 38 98
Highest Altitude (m) 1.215 1.445