Main Sail is in Hoveton, which is right next to Wroxham on the Norfolk Broads. It's a waterfront apartment, one of four in the building. You've got a decked balcony that looks straight out over the water. It's good for sitting out with a drink and watching the boats go by.
The place sleeps nine people. Five bedrooms, four bathrooms. It's got a 4 Star rating. It's modern and comfortable, not old-fashioned.
You get your own private mooring right outside. The big thing is you get the use of a motor day launch for free, except during the school summer holidays. You can still hire one then, at a discount. If you like fishing and have a licence, the owner can point you to some spots nearby on their stretch of riverbank.
Wroxham is a five minute walk. That's where the shops are, a few cafes and restaurants. It's the main place for hiring boats and getting supplies.
Norwich is about ten miles. It's a proper city with the cathedral, a castle museum, shops, that sort of thing. The coast is about half an hour's drive. Cromer and Sheringham have beaches and are nice for a day out.
For walking, the Broads are full of paths. You're on the river so you can just step onto your boat. For organised trips, the boatyard next door does them.
Facilities wise: all bedding and towels are included, there's a washing machine, a cot and a stairgate. WiFi and parking. You can bring up to two dogs. They can supply dog life jackets for a refundable deposit.
Useful links if you're planning: Broads Authority for boating and walking info, National Trust Norfolk for places like Felbrigg Hall.