The room was not exactly the same one as the one on the picture but it was better though so that was okay :-) The staff was welcoming and the place is really near the historical center, the location is great.
The pickup shuttle was at the airport on time so that was great too. Small drawback: the shuttle was 25EUR one way for a trip to up to 4 people (we were 2 travelers) whereas in the city we found afterwards shuttles at 5EUR/pers from the city to the airport. We then spent 15EUR going through the hotel partner shuttle system.
Apart from that, it was a short but good stay at Deniz House Hotel. Good price for the value.