Eyüp's apartment is in the trendy Beyoglu quarter, a very nice neighborhood. The street is quiet, there are lots of nice cafes and small grocery shops around, a wonderful take away pita bred place (looks like pizzas) down the street and left, and very close to the Galata tower. The Tophane tram stop is a short walk away and is very convenient to have access to the main monuments in Sultanahmet and beyond (grand bazar, Suleymaniye and Sehzade mosquee...) and ferries.
The apartment is in a traditional building on the third level (stairs). It has two small rooms and a good size living room. It is simple but comfortable . The private sauna/hamam in the basement of the building is a really nice treat after a long hot day of walking around the city. Highly recommended. Finally, Eyüp is very responsive and answers very fast for any question or trouble we may have had (with taxis, preparing the hamam etc.)
Altogether, this apartment has a good quality/price rate in a very good neighborhood and Eyüp is a very good host. We recommend.