I stayed at Julia's flat alone for a couple of days (but 3 people staying here would be fine) and had a great time.
The flat is equipped with everything you need with some really nice touches and Julia and her husband are more than happy to help with anything you need.
You can tell they really look after their flat and keep it nice and clean for their guests too.
Also, the location is great (5 minutes walk from metro Puerto de Toledo), I know Madrid quite well so I walked everywhere from the flat.
I'd definitely come back and stay again! Thank you Julia & Francisco for such a nice experience!