I was in Izmir for a two weeks travel for business. The first week I stayed in the Kordon Otel Alsancak. It was not bad at all; the rooms were clean, quite new furniture, comfortable bed and a acceptable breakfast.
But in the weekend I realized that there were much better options for only a small change in price. For 15 euros more I moved to an awesome hotel, in the neighborhood, with a pool, gym and a superb breakfast, I will not say the name here but it is ranked in the top 3.