Martin's apartment was very nice! It was just as in the pictures, and had everything we needed for our stay. Communication was good and check in and check out were very smooth!
However one thing to keep in mind is that there is no upper wall between the living room and bedroom, and between the bathroom and bedroom the upper wall is just glass. That means that at night, if one person gets up to use the toilet, or stays awake later than the other who is sleeping, the light will shine quite brightly into the bedroom and can be a little disturbing.