This hostel is much more like a home then a hostel. From the moment you walk in the door you are greeted with a lovely hot tea and told to sit down and relax. The man who manages this place is the sweetest Turkish man who will do anything to ensure you enjoy your stay. The rooms are clean and comfortable and have recently been refurbished. There are clean shared bathrooms, which is fine as it is a hostel after all.
The breakfasts here are great!! The kind lady in the kitchen will wait around all morning until you are up and ready to cook you a big traditional Turkish breakfast to start your day. Once again nothing is too much for them and they will keep offering you plenty of food and drink. They also offer bath towels free of charge.
You cannot beat the position of this place! It's only a short walk to both the Blue Mosque and the Grand Bizarre. There are also plenty of restaurants near by and the tram stops just moments away from this place.
But be careful finding it! Unfortunately, the Castle is not signed very well and it's a case of blink and you will miss it! Also there a quite a few stairs to get to the hostel, so be prepared for that.
Overall though this place is not like other hostels. I have been to Istanbul three times and stayed here each time, as it truly does have that homely feel.