First, Omer is certainly a GREAT host. He is very responsive and helpful whenever needed. He always provides useful and accurate information for anything we ask about, and was able to accommodate our requests in a very timely manner.

Second, the location is great and close to multiple public transportation options, albeit within 5-10 min walking distance. The place is also very close to Taksim square and Istiklal Street, with multiple walking routes to get there. Just be aware that all routes to Taksim/Istiklal are uphill with many steep hills. As a matter of fact, my family was joking about the fact that everything seems uphill from the house, but the good thing is that it's downhill on the way back, which is usually more useful since we would be carrying stuff back (shopping, grocery...etc.). My kids named each of the different hills on the way (Steep Steve, Treacherous Tom, and Deadly Dave). So plan accordingly and have fun while you are at it.
Third, the house is OLD. So having the right expectations would serve you well. AC is limited to 2 rooms (master bedroom and dining area upstairs). Omer was gracious enough to provide fans as requested, and it was sufficient for our needs once we got used to it. With high ceilings (which is good in having the house at a good temperature during hot days), the stairs are also on the steep side. So expect to go up and down steep stairs which might take you a short bit to get used to (if you don't have a similar arrangement).
Finally, there are multiple small grocery shops, bakeries, small local food places, and a couple of restaurants within a 5 min walk. If you also want super markets and bigger restaurants, they are available within 5-10 mins walk max (that's going uphill, so not that far :) ). The area has many coffee shops, so this is also great.
Overall, I would certainly consider this place again for future visits if it is available, and again, Omer is a SUPERB host by all means.