We stayed here for a month and Gioia and Lino were great hosts to have. They were very responsive when we reached out and made sure any issues were quickly addressed. We loved the location as there is so much to explore in the neighborhood, and it is also close to the tram/light rail that quickly takes you over to the old city. Getting to the Asia side was no hassle either as it was just a 15 minute walk to the ferry in Karakoy.
Some of the highlights of the home is the kitchen (which you have everything to cook meals with) and the views from the 4th floor. The shower has great pressure and was always warm for us, although there were a couple times we had to turn the water heater back on (as it sometimes errors out and turns off on its own). I am glad I was staying in this unit vs. the upstairs unit that was available, as I had access to the water heater and wifi router in the scenarios that they required a reset.
The home itself has its charm but not without some issues as mentioned in some other reviews. The wooden floor kind of slumps in the kitchen area and is quite squeaky, you can't flush toilet paper down the toilet (which may be true for many other apartments in Istanbul), and the bed wasn't the most comfortable for us (although Gioia provided us with individual mattress toppers when we brought this up). For the most part anything else you may encounter (eg. power outages) will be something you will experience anywhere else in Istanbul (unless you are staying in a higher end hotel), but I want to give Gioia and Lino props on calling the power company and providing us with an ETA on when to expect power again.
Overall this was a good spot to have for our time in Istanbul, and the location is hard to beat. If the price is right and you're wanting the true Istanbul experience this will be a good choice.