We stayed here for a few days whilst in Istanbul. Erol welcomed us with a coffee, took out a map and suggested things to see and where to eat (we went to two of these and they were fantastic). He also gave us some good tips.
Front reception is open 24:7 and we always found them extremely useful. They also booked our taxi to the airport.
The place itself is great, quiet and well located. If you go for food go by their suggestions. Mivan was a great place to eat but avoid Sunlight Cafe. The food was poor there; it’s a tourist trap.
The main sights are a 10-15 walk away.