We've recently been researching where to go with our 7 month old and thought there we too many options! Eventually we settled on northwest Sardinia, around Alghero area. Haven't been yet so can't report back but it looks to be a good option.
Yeah it has been 06:55, 07:30 and 08:30 from what I've seen in recent days. The 06:55 is usually a short train, so busy but not overwhelmingly so. I would assume the 07:30 is worse.