I and my partner stayed there for one month.
There's a wonderful view from the terrace. There are plenty of cafes within walking distance. There isn't much variety in restaurants, though. We did find good pizza at a place down the hill and off to the right - sorry - I can't remember the name of it at the moment.
The hill - do not stay here if you have any issues with walking on hills. It is STEEP, and I like the challenge of a good hill for exercise, so that should tell you something. To give you more of an idea - a delivery truck flipped on its side and skidded to a stop one evening right at the corner by our place. We watched the chaos from the roof. The road is cobblestoned, which is an insane choice for such a hill. You will hear every car/truck/van struggling to get up the hill - tires squealing and smoking. Taxis refused to bring us to the general area, let alone drive up the hill. If you're fine with walking that hill every day, then go for it. Like I said, there's a great view. Also, you will have a unique chance to get pictures of the school from up high.
The cleaning - what cleaning? The stairs were not cleaned once in the whole month. When we departed, there were HUGE dust bunnies on them. Our room - I had to clean the toilet upon arrival, there was no toilet paper, and there was a disgusting loofah full of 'something' and hair, and it stunk.
The bed - it's not very comfortable. Garbage was not taken out often (at all?). I know that we, and others, were empyting the trash in the common areas. The community bins are down the hill, and if staying to the right of the Y intersection then they are to the left of the following intersection.
We were in Artemis (the name of the room), and above was a long term guest. He drops a LOT of stuff, and noise travels easily in the building - drops heavy things at 1 or 2am or later, and you'll hear him walking around a LOT at that time. And I mean HEAVY things were dropped. It was so loud that I was startled even with earplugs. It was a regular thing. He's a friendly guy though, and has a cool cat. His cat fell from the terrace while we were there, and LIVED!! Amazing! That's a LONG drop!
Oh, and when he used his AC it dripped through to the ceiling of our bathroom, and even through that ceiling into the shower (there's a good metre of space between the 2). I notified the building manager, who lives nearby. It wasn't looked at while we were there, which is a hazard.
Pictures - I don't believe there's actually a photo of the building in the advert. The address was wrong - for us, and for the people in the room below us. We went to #19 as instructed. It's not #19. Walk up the hill to the building on the corner directly across from the school. Also for both of us, the manager wasn't told we were arriving, and we were sat outside waiting for him. There's also no number on the building, so... yeah.
There is a washing machine. The dryer was broken the entire time - so "enhanced clean" Covid-style is not happening.
People smoke in the kitchen. Gross!
The manager was fairly responsive when we wrote to him, and was pleasant to speak with.
Hardly any cutlery in the kitchens.
People rarely cleaned up well after themselves in the kitchens.
It was like we had a private room in a hostel. It did not feel like an Airbnb - at least not what we'd expect. We stayed in very nice hotels around Istanbul for 200 a night that included a fabulous buffet breakfast, even in Sultanahmet and Taksim. Just something to consider.
I suppose if you're only staying for a short time then the annoyances wouldn't matter so much.
Oh, but GREAT water pressure in the shower! No hot water in the kitchen for washing dishes, though.
To the owner - this may not be your best review, but I have to be honest.
We did enjoy our time in the neighbourhood.