My wife and I loved this apartment in Istanbul's Beyoglu district. It was very stylish and comfortable with a good shower. The location is great, a short walk from popular Istiklal Street and the funicular down to Galata Bridge then tram access to the old city of Sultanahment (or walk it, it's probably less than 5km, and it is a beautiful walk). James was a helpful host with good recommendations (we enjoyed a birthday dinner at Mikla very, very much). When the weather turned cool we reached out and he was there within 20 minutes to turn on the heat.
The neighborhood is a delight. I would say go across Istiklal to discover smaller streets, boutiques and cafes that reminded us of le Marais in Paris. Or, instead of turning right to get to Istiklal, turn left, go down the hill, into a more working class Turkish neighborhood, and pick up a perfect "pide" (pizza) for less than $2.
The apartment was very quiet, though we enjoyed the call to Prayer several times each day, through the rear windows (which offer a beautiful view- even of the Bosphorus). At night you may hear neighborhood cats once or twice, so light sleepers bring ear plugs or sleeping pills.
The area is hilly. We are almost 60 and managed it fine. It might be challenging for some.
I wholeheartedly recommend this apartment, and I would love to visit and stay there again.