This is a great apartment with a nice open space for socialising. It is clean, the hosts were attentive, and very helpful with check in, even offering a lift from the airport. It is also in a brilliant location, around a 10 minute walk from the puerta del Sol, whilst still offering a retreat from the louder places, being situated a few slip roads away from the busier roads.
I would thoroughly recommend Casa Mia for a large group looking for a great weekend in Central Madrid.