We really enjoyed our stay at Ömer's place! We arrived to find the place gorgeous and clean. Ömer had kindly welcomed us to help ourselves to beers, teas, etc. which was thoughtful. Throughout our stay he kept checking in with us if we needed anything and was reachable at all times - a great host!
To comment on the apartment itself, overall our stay was really comfortable, we loved the layout of the spacious apartment and the showers were great. The air conditioning worked well in the sitting room; we did find the bedrooms warm at night but this was Istanbul in August, in fairness! We more than enjoyed the giant TV which even has some English channels. The balcony was gorgeous. Also there were many useful things in the Apartment, like a washing machine/dishwasher, that we found very useful.
The location of the apartment was amazing, so close to the Istiklal and we felt well placed for our stay in the city. The one consideration for families might be that the bars on the street below were very loud into the early hours at weekends, so earplugs would be a necessity. If you are looking to enjoy Istanbul's amazing nightlife this is the perfect place! There were some lovely restaurants nearby that Ömer had recommended, and plenty of small convenience shops just outside the apartment which pretty much catered for all our needs.
We'd certainly recommend the place. Thanks, Ömer!