I am in the beginning stages of planning a month/6 week trip around Southern Europe at the end of August/September. If anyone has positive and personal experiences of very reasonable B&Bs, pensions, small hotels and good hostels (with private rooms and facilities) in Athens and the Greek islands (don't mind which islands but wouldn't mind spending a few days each on about 3/4 islands, so reasonably near to each other preferable), (southern France, north-west coast of Italy, Florence, Milan, Venice, Croatian coast as well) I would greatly appreciate it.
Any other travelling tips greatly appreciated as well, as not done anything like this before (2 x 34 year-old professional males, used to creature comforts!).
Thanks all in advance.