We had a lovely three nights at the Meddusa. Wonderfully located halfway between Aya Sophia and the Grand Bazaar, 7 minutes walk from each, but quiet. Yes, the rooms are pretty small and a bit dated, the bathrooms very small, but it's all clean and there's air conditioning and at this price, you don't get five star luxury. And who goes to Istanbul to sit in a hotel room? Very friendly and helpful staff, a good breakfast and from the roof terrace, you can see the Blue Mosque, Aya Sofia, the Bospherous Bridge, Galata Tower and the Suleymanie. Not many hotels can boast that. We had three very good, nights sleep in the heart of the old city for a very good price.