We contacted Basim one week before our trip, unfortunately he was busy at our dates, but he was always in contact with us answering all the questions we had. Instead of him we had 3 days of tours with his father Humaid and it was an excellent experience. The first day it was the Muscat tour, the second we went to Nizwa and the Green Mountains, and the last day we went to Wahiba Sands and Wadi Bani Khalid. Humaid was a perfect guide, very intelligent, funny and hospitable. Also he is an excellent driver and we felt very comfortable during the trip to the desert and the mountains.
We had only 2.5 days in Oman, but with the tours it felt like we've spent a week or more, thanks to the guide. He was always very attentive to us, we also spent two warm evenings with his lovely family. I think we will definitely come to Oman once again, and would be happy to spend the time with Humaid or Basim.