Double room for rent in large house, quiet area

Double room for rent, with new double bed, otherwise unfurnished, short or long term considered, the house is detached and large, set in a quiet area in Burgess Hill. Ample private parking space in a safe neighbourhood, green space within 3 minutes walking, some storage space is available if needed, property is open plan and has 3 reception rooms downstairs with joined conservatory and large double height kitchen. The bathroom has underfloor heating, colour therapy lighting and integrated TV. There is a garden sauna. My son (10 years old) lives with me for 3-4 nights per week most weeks. I usually work from home 3-4 days per week, and am looking for someone who is tidy, clean and fun to share with. I have been a 'live in landlord' previously to a male lodger, and for contrast want to share with a female. The house is a 5 minute drive to shops, the nearest supermarkets are Tesco and Waitrose, Brighton Beach is 20 minute drive, the South Downs National Park is 10 minutes drive, the train station is a 25 minute walk. I would consider long or short tenancy, but the main overriding factor is that it has to fit with my son for half the week.