Amazing nice hotel in a genuine part of Midyat: it's a beautiful building in the "back" of the historical centre, far from the noise of tourists, surrounded by fields and nature. And the city center is within sight, it's only 200mt from the hotel, very quick to reach.
The staff is very nice and helpful, they help organising visits. The son of the owner speaks good English.
I personally suggest staying in Midyat a couple of nights, enjoying the charms, rather than over a day trip from Mardin, like everybody does