The place is very comfortable. One fan is provided to help ventilation on the ground floor. A second fan may be useful for the basement bedrooms since there's no windows on that level.
Only issue is that the spiral stairs for descending to the basement bedrooms are quite tight when carrying large luggage up and down, the shower which I find rather tiny (not much room to move about without constantly knocking your arms against the walls), and insufficient toilet paper for a group of six (only one and a half rolls were provided, we were staying for 3 days 3 nights).
Otherwise, the accommodation is very comfortable and clean. Sofa bed is very comfortable for two and also a decent place for groups to hang out. Whole apartment is comfortable for six.
Location wise, there are many restaurants and groceries within a few minutes walking distance, metro is just a few minutes around the corner making this a very suitable place to get around. Neighbourhood is also peaceful and quite.
Would definitely recommend this place.