The apartment, the building and the neighborhood are very safe and very clean. We loved walking around the nearby streets, there is so much to do and so many people every night. The cafes are charming and the playful street cats can keep you company and entertained if you're out very late at night. There's a nearby train that can take you to the Grand Bazaar, Spice/Egyptian market and Blue mosque (10 minute walk to metro, 10-15 minute train ride, and 5TL/person one time pass). The host is very communicative and very kind. I would definitely recommend staying at Ali's place.
I would like to note for those who might have a physical disability that the streets of the neighborhood are very steep, the apartment building does not have an elevator, and our specific apartment is on the 4th floor.