I would highly recommend Giuseppe’s place. Great location - short walk to all restaurants and bars in Navigli, Duomo is 30 min walk but you won’t notice it as there’s plenty to see on the way there. Conveniently public transport - trams, tube - is just around the corner.
The place was clean and had everything you need, very comfortable bed and pillows, good towels. Good a/c saved me on the hot nights :) i arrived late and some food in the fridge made my happy :) All in all, great place and great value for money.