Kupeli Palace Hotel is a great hotel to stay at. The staff are very friendly and helpful. We stayed in a double room, which had enough room for us, TV, air conditioning, a mini bar, was cozy, clean and the hotel cleaners came daily to tidy the room (they even came later in the day when requested). The breakfast buffet is good, full of variety, you'll find food that you like and it will be enough to last you past lunchtime. With regards to facilities, we did not use their spa (nor did we see anyone else use it), but it looked very nice and clean. There is also free wifi across the hotel or a spare computer to use in the reception, both of which were veru useful. The location is a few minutes walk, 5-10 mins away from the Blue Mosque, and you're only a 5 minute walk away from other amenities, such as a local park with a fountain, local shops and bars; additionally you're also 5-10mins walk from the Grand Bazaar area, but far enought not to hear any noise. Overall I would recommend Kupeli Palace Hotel if you are looking for somewhere that is safe, clean and tidy, where you can rest your head during the morning to explore the rest of Istanbul.