We recently stayed at 172A street for a family reunion of sorts with 16 guests ranging from 14-55 years of age and guests flying in from the northeast and others driving in from closer states.
The house was perfect for our mix of teens and adults. Although it states is sleeps more, 16 seemed to be about the perfect number given the number of regular beds. You could get more in but, they would either be doubled up or on fold outs...not an issue for us. The house is relatively new and the finishes inside and out were great. We ran into a few minor issues such as double doors on the Carriage house not closing and ice makers struggling to keep up but, again, these were small issues that we dealt with and didn't impact our stay.
The location is great for access to the HUB or Rosemary with easy access to Publix and the bike path. The only small negative with the location is beach access. We all agreed that, although 0.5 miles is not a long distance in absolute terms, it seems like a LONG walk when you are carrying or pulling beach supplies. The bikes were a huge added plus though and if you aren't needing to come back and forth to the house it isn't terrible, with a little planning. It is a bit misleading though to say it's a short distance to the beach. Also, the 2 beach chairs and umbrella were a nice touch. We haven't had other houses include those in the past. Another nice touch is the sonos speakers, those came in handy.
All in all a beautiful, very spacious house in a great location, as long as being away from beach access isn't an issue. Management was great as well with constant communication prior to arrival and allowing us to check in early! We would definitely stay again in the future.