Communication excellent.
Didn't meet host at all but met a friend of his called Ismail who was very pleasant and extremely helpful.
The location is perfect, 7 minutes walk to Hagia Sophia.
It wasn't too difficult to find but I did have to wait unnecessarily for some time for someone to let me in.
In the instructions, maybe the host can put down attached to Valley restaurant which would be very helpful for future guests.
All in all, the facilities were amazing, I had a lovely time and the restaurant downstairs was absolutely delicious with a lovely owner.
Istanbul is awesome and I would highly recommend staying here.