Flew JetBlue Mint from LAS to JFK overnight for $400. Really quite remarkable at the price point! I got a seat in row 4 which has its own door that can be closed. There is a huge amount of counter space as seen in the photos. The seat came with a substantial pillow and a blanket that provided a moderate amount of warmth. Also came with an amenity kit on such a short flight, which was a pleasant surprise. There was also bottled water at the seat, which is a great touch.
The seat is fully lie flat and quite long in length, though I don't know the exact length. There were a few storage areas, which is probably ample for most.
Flight attendants took drink orders before takeoff and explained the seat features. Got the signature mint cocktail which was light and refreshing.
For the food, I got the grilled cheese, tomato soup, and ice cream (from a LA creamery I believe). Grilled cheese had crisp bread and tasted amazing. Tomato soup didn't have much flavor and the portion size was pretty small. Ice cream was also very good.
Overall, the hard product is fantastic at a very low price; certainly better than AA domestic first or United's old lie flat seats or United First. Comparable to Singapore Air business. Food was fairly good as a whole and service was attentive. Would highly recommend trying JetBlue Mint out!