Plenty of space for 15 adults to eat/sleep/recreate. Excellent location. House was very clean. Property manager very responsive to maintenance concerns (slow sink draining, changing a 15' high ceiling light, new grill propane tank). Kitchen/dining/view/beach access was superb. Wi-fi works great. House has a combination push-button lock which makes it easy for multiple folks to enter without needing a physical key. Combination is unique to the stay. Third floor access is by a small circular staircase--not accessible by wheelchair or disabled.
The only reason I give 4-stars rather than 5 is that main floor lighting is dim, and that most of the furniture (sofa's, arm chairs, coffee table, bedside tables) is fixed to the floor so it can't be moved.
The themed decor items throughout the house and in each bedroom is also fixed in position, ie., a lamp on a bedside table can't be moved.