My friend and I had a wonderful experience with Abdallah as our tour guide to Nizwa fort, Jabal Akhdar, and Birkat al Moz for the whole day! He was very knowledgeable of history, had excellent English, and was very kind at multiple moments - going well above and beyond the call of duty to ensure we were comfortable. Abdallah was also very patient with all of our questions and let us go at our own pace to take pictures and shop at the Nizwa Market :-) We will definitely suggest him to friends and colleagues who are hoping to visit Oman. This tour was well worth the expense for the high quality, stellar customer service, and convenience it afforded us !