The apartment is great and very well located. The apartment is old but well maintained and full of character. Sabahattin lives next door so is always on hand if needed. Sena responded to any messages within minutes. Wi-Fi was good. Galata Tower is within 2/3 minute walk as are many good eateries. The apartment is up a steep hill from the river. We stayed 7 days and only on the last day did we find a “tram” that runs a single stop frequent service from Karakoy (by the Galata Bridge) to Tunel leaving a pleasant downhill stroll to the apartment. The travel cards that we bought needed pre-authentication with the online addition of the HES code. The receptionist at the hotel next to the apartment (also owned by Sabahattin) did this for us. If we return to Istanbul we would definitely stay here again.