Marina and Stelios's place is absolutely lovely. It's the perfect amount of space for 2 people but you can also use the sofa bed in the living room if there's 4 of you. The location is walking distance from all the sights and restaurants so was perfect for me. I felt very safe in the area and the other building residents were really friendly even though I speak no Greek. The only thing to be aware of is that the wifi isn't that strong at times and there is some noise in the day from the school across the road. But I think for the price it's a great value place to stay and I would happily return if I visited Thessaloniki again.