I thoroughly enjoyed staying at Mehmet's property and it was a great base to explore all areas of Istanbul from. Karakoy ferry station is a 10-minute walkaway and there is also great accessibility via the Tophane tram.
The apartment itself is small but cosy and I really enjoyed coming back to the basement nook after a busy day exploring Istanbul! As it's on the basement floor it wouldn't be suitable for those with accessibility issues as there are some steepish steps leading down to the basement - it wasn't a problem for me at all though.
I was very happy with my overall experience! Thank you 🌞