I stayed at Anna's for four months, from March to June, and I had such a great time there.
The apartment is very cozy, perfectly maintained and well-equipped: besides linens, kitchen supplies etc. there's a new washing machine and very useful fans for surviving the hot season! The balcony too is nice, perfect for spring & summer and sheltered even in rainy days.
The neighbourhood, Agios Pavlos, is mostly residential, but in a few minutes from the house there's some cafes, bakeries, restaurants, coffee shops and mini-markets. It is somehow uphill, but absolutely worth it for the view (especially from the top of the Byzantine Walls, the Trigonion Tower or the forest paths) and the proximity to the (lovely) districts of Kastra and Ano Poli. Depending on the part of the city centre of you want to reach, you can easily move by feet: it's a 15 minutes walk to Rotonda, 20' to the University, Aristotle Square or the White Tower and 25' to Ladadika. Transports-wise, there's a bus stop very close to the house, or as an alternative taxis in Thessaloniki are a very quick and economic option.
As to Anna, she was super nice and helpful, quick responding and caring. For both shorter or longer periods, I cannot but recommend her place! Although I stayed there only for some months, it really felt like home