We recently did the 4-day Adelaide Hills bike tour with tour de vines including the Barossa, Clare Valley and McClaren Vale. Every aspect of the tour was amazing: Dave our guide was not only super enthusiastic, but being local had a very detailed knowledge of the whole area. He was very accommodating and went out of his way to make this tour magic for us.
Accomdation: We couldn't fault the accommodations, especially Adelaide (a very centrally located hotel with great breakfast and dinner options), the Novotel in the Barossa and Clare Valley Country Club were we had king size rooms with a beautiful outlook and again very good breakfasts.
Highlights of the tour for myself are hard to list as there were so many. But the lunches at, Skillogalee's, O'Leary's and Wirra Wirra and The Cube at D'Ahrenberg (this one is a definite must and you need time as there is so much to take in) and the beautiful scenery riding along the various trails. The wineries we visited were well chosen not only for their beautiful wines but also their either historical value or beauty (or both). The two nights not included in the tour package, Dave suggested beautiful restaurants which didn't disappoint: the venues were incredible in ambience, food and service.
The riding was easy, especially on e-bikes and very enjoyable, although it was very windy and pretty cold for us Queenslanders!!
We highly recommend this tour especially if you are a food and wine lover!