Italy
Our general impression from being cycling tourists in Italy is good. The landscape is often hilly, with charming medival cities and villages.
Cycling route suggested:
Round trip from Firenze (map link)
Firenze – Panzano in Chianti – Monteriggioni – San Gimignano – San Casciano in Val di Pesa – Firenze
Also the coast from the French border til Savona is really beautiful (see Nice to Savona under Longer Routes).