We very much enjoyed our stay at the house!
For starters, the location, near Taksim Metro is excellent. The city is quite large, so having both the metro and funicular at Taksim was super convenient. The tram that can take you to Sultanahmet and the old city is also a 10-12 minute walk away. For restaurants, coffee shops, dessert, boutiques - there's a LOT in a 15 minute radius. There's no shortage of any of those things, and you'll find all of those within walking distance.
The house itself is tastefully decorated, has comfortable beds, and clean washrooms. The house was super clean when we arrived, and had a lot of the small things we needed since our bags were delayed (toothbrushes, toothpaste). One note here, the house is furnished differently than the pictures. I think it was probably staged for the pictures, but the furniture isn't all the same. Second note, it's a two bedroom, two bath (not 3 /3 as listed). The layout is as follows. From the ground level, you climb two flights to the first bedroom (and attached bathroom), and one more flight to the next bedroom (and nearby bathroom), and then one more flight to the common living room with dining table and kitchen.
The one important note is that the street the house is on gets _very_ loud late at night. It's a street that people gather on to drink, and there are a couple loud bars / clubs. On Saturdays the noise went on till 2/3 AM, and Fridays ended a bit earlier. The sound insulation is poor, so bring earplugs but also just come mentally prepared since earplugs can't account for bass. Loud cars drive through the same street at night as well.
Overall, we enjoyed the stay here. It was clean, had comfortable beds, in a location near the metro / tram, and dozens of food and coffee options.