An excellent promenade and a park for walking with a local landmark in the form of a lighthouse. Definitely, if you have free time in Istanbul, I advise you to take a walk. Everything is clean, tidy, there is an area with playgrounds.
To be honest, Istanbul is not the place where I want to relax. If you want to see beautiful mosques, then you can go.
I think this city is too religious. Well, some things were also not liked in the local order. Roughly speaking, the tourist pays 3-4 prices for everything.