The apartment I got (1st floor without lift) was clean and well organized, with a small but well equipped kitchen ... but here end the positive. It is extremaly small (the pictures are well done and does not give the exact dimension of the apartment). However the real problem is both the sleeping room and bathroom does not have any window. The only windows (in the dining room) is opening in an internal tunnel where other apartment's windows opens. Thus resulting in an apartment really dark and without air circulation. The lack of air conditioning system is also worsening the situation. I strongly do not recommend it for people suffering of claustrofobia (especially in summer). Also the rate of CO2 (without a decent air-circulation) may create health problems for peole suffering of this problem.
Sorry to say but this is the worst apartment I got in Madrid so far and not even cheap !