I have travelled on Pune - Kolhapur - Nipani - Uttur - Ajara - Amboli - Sawantwadi - Goa route just last week. Uttur-Ajara stretch is a bit narrow at places (one and a half lane) because they are widening those stretches. But otherwise its pretty nice. Will post a travelogue soon.
More info ->
http://www.team-bhp.com/forum/route-...tml#post762699 (Pune to Goa - advice on planned route would be appreciated)
BTW, I started at around 6:20am in the morning and reached South Goa (Margoa) around 3pm - 1 hour lunch + other breaks. If you are heading to North Goa - Subtract another 30 minutes.