This was perfect for our family vacation for 5 people (3 adults and 2 boys - ages 6 and 9). There was plenty of room... the beds in the loft went unused. The glassed-in sun room with the additional TV allowed the boys to watch something while the adults watched something else and turned into a great play space for them.
The washer and dryer, once we found them under the house :) seemed new and were full sized (different than other homes we have rented). With little kids this was a huge plus! We also made use of the bikes as well, which I don't recall seeing on the description, so that was a nice surprise. They were older but worked for our needs to get to and from the beach for morning runs/walks.
This was our 4th year in Seabrook and our 2nd year renting a Tarpon Cottage... love their layout and plenty of space.