I gave 5 stars to every related aspect but i will also give some info that are maybe useful to anyone visiting Ntemi's and Nick's apartment.
The communication was excellent and whenever we contacted Ntemi she was very helpful. We forgot to ask for an extra towel which was our fault and due to the fact that owners are probably outside Thessaloniki they weren't able to provide it on Friday but on Sunday monring. Which is no problem but just an info for other visiotors that may need to contact the owners earlier for similar or other requests.
The apartment was very clean , didn't have noise and it's on a very central point but this has it's advantages and disadvantages. Parking is very difficult but after you have parked you have everything really close which is great for anyone that wants to walk around to see the beauties of Thessaloniki.
As i have already informed the owners i would prefer better pillows and more hot water as the water heater was small and not so much capacity of extra hot water. Both are my own specific requests and maybe other visitors will be perfectly fine with current setup.
We would for sure be checking again the apartment's availability in my next trip to Thessaloniki!