I stayed in Eric and Dinah's ground floor apartment with my parents and my brother - four adults - and we loved waking up in and coming home to this cozy, tasteful and comfortable space. It really felt like a home away from home, partly because the feel of it is warm and welcoming, and partly because the hosts really put thought into the comfort of the guests... a few highlights: a washer and dryer and dishwasher, a Nespresso machine, breakfast foods and snacks and a bottle of wine as a welcome (and so we didn't have to go shopping right away), USB chargers for electronics (don't have to worry about adapters!), toiletries in the bathroom, keyless entry to the house, and more. The private entrance and back terrace make this apartment particularly comfortable, giving guests a sense of autonomy and peace of mind--there's enough of a separation that you don't feel you're disturbing your host or any neighbors!
The neighborhood of Clinton Hill is charming and peaceful--it's set a little away from the busy parts of Brooklyn, has more of a residential feel. It's still close enough to the action, either on foot or by bus/train, to not feel isolated. We had several meals at Pilar Cuban Eatery and Clementine Bakery -- both highly recommended.
We'll definitely be in touch with Eric and Dinah when we next visit New York and hope we'll find the apartment free for us to rent again!