Not sure why there aren't more reviews on this place. It is really a nice property. Clean with an Omani vibe. I had room number 6, which has a quiet, but strong AC. There was an attached bathroom with good pressure and hot water. There is a large kitchen at the end of the hall. The staff- Sadiq and Husain, were kind and helpful. It's much more than a hostel. I almost forgot the location! A quick walk to the souq and fort. Somehow it's centrally located, but at the same time quiet. Wish I had taken some pictures to post. Take my word- it's a hidden gem and unbeatable value. You will enjoy your stay in Nizwa here.
Nima guest house is very centrally located to all sightseeing sites at Nizwa - the fort, the various souks, and the famous goat market on friday. all these sites are within 5-10 min walk from the guest house so there is no need to use the car once parked. the guest house also has a full sized kitchen, with gas stove, full size refrigerator, and all cooking utensils. there is a small supermarket about 5 min walk from the guest house where i bought my food supplies. there is also a bakery across the street from the supermarket. parking at the guest house can be a little tight, but there are ample spaces on the alleys nearby the guest house so it is not a problem even if the guest house is at full occupancy.