We stayed for around 10 nights and everything was really nice.
The location was ideal - just a 10 minute walk from the coast/sea walkway where there are loads of restaurants and touristic sights to see. Just downstairs from the apartment are several small mini and supermarkets as well as cafes which was really handy for us. Also, the taxi fare from the airport to the airbnb was 18 euros.
The airbnb itself was extremely clean, very modern and nice and homely. The kitchen was a good size and had all of the amenities which you would need for a long stay. One of the best things about the airbnb was the A/C which was seriously needed as temperatures outside were 35c (very hot), not only in the living room but there was A/C in the bedroom which made sleeping very comfortable. The bathroom was also a good size - the waterfall shower was amazing and very relaxing. There was a washing machine in the bathroom which was very convenient, it was modern and easy to use. The apartment was on the 6th floor and the building had a lift/elevator.
The host Cristina was extremely helpful and very friendly. She responded promptly to any questions we had and made recommendations to us when we asked about restaurants. Overall, we had a really great stay and would definitely recommend this to anyone who is looking for a nice stay in an ideal location in Thessaloniki.