Mert was an excellent host. He checked up on us throughout our stay, and gave valuable tips + advice. The check-in instructions and directions were clear, and we made our way to the flat without any issues.
Six flights of stairs brings you up to the apartment, which has a roof terrace with commanding views of the Aya Sofia, Blue Mosque and Bosphorus (we spent each morning here with a coffee and some breakfast). The flat has all of the necessary amenities, and Mert provided fruit, bottled water, coffee, tea etc.
Located in Beyoglu, just off a popular shopping street, you'll be able find gifts, food and entertainment among others. The flat is walking distance from the tram, funicular and busses, making the rest of Istanbul quite accessible. I should mention that neighbourhood is lively and vibrant, so expect some degree of noise over the weekend.
You can't go wrong with this flat if you're visiting Istanbul - I would definitely recommend it!