Sultanahmet, Eminönü and Sirkeci areas are usually considered to be touristy areas, hence more expensive. But sometimes you need to give this area a second chance and explore it. New places are opening every year and some might surprise you in a positive way.

Their breakfast plate (Kahvaltı tabağı) is pretty big and it costs only 22tl. Among other things, it includes also french fries (which I exchanged for extra veggies), tahin pekmezi and unlimited tea. View from the top floor is really nice, however, it might be a bit difficult to find it. I recommend it to search for it with the help of Google Maps.
Adress: Demirtaş Mah. Deveoğlu Sk. No:10, Eminönü, 34134 Fatih/İstanbul
Besides in Eminönü, you can also find them in Üsküdar.