We've just planned and booked a week in a self catering cottage, half way between Southampton and Salisbury. For late Feb.
We've been before, and it was one of the best (and cheapest) holidays EVER!
We can take the dogs.
The accommodation is awesome (a listed chapel, sympathetically converted, with a vast kitchen that used to be the old schoolroom, a vaster main room, that used to be the chapel, a full size snooker table for Mr B, a lovely village setting, excellent kitchen equipment, dishwasher, washing machine and tumble drier - so I don't come home with any laundry to do!)
It sleeps 8 so other family can come and stay.
Perfectly situated for us to visit the Marie Rose exhibition. Several times, because it is so vast we will need to take it in bite sized chunks.
Lots of cathedrals, Stonehenge, Avebury, etc. etc.
Less than 2 hrs from my parents, so we can visit them on the way home.