This is a great apartment to stay in while in Istanbul. It's right next to the Galata Tower and all the buzz surrounding it. You'll have grocery store, restaurants, juice stands right next door. It's about a 40-minute walk to the Egyptian Bazaar, and a 10-minute walk to Istiklal. One thing to remember though is that it may take time for a taxi to get through the street filled with pedestrians, so plan for either additional time or an extra short walk.
Sebastian deserves a separate paragraph here. He was extremely helpful and went an extra mile from meeting us at the apartment and helping us bring the bags upstairs to arranging airport transfers and PCR tests for us. He's one of the best hosts I've had.