The good: AMAZING view! I selected #5 because I knew it would be on the top floor and would give us a better view and better breeze. It was a great choice of room and I would recommend it to others. Seaside Villas are very central and it is a very short walk to all the main attractions. We never felt the need to rent a golf cart, and only rented bike one day to get some exercise biking around the entire island.
The rooms were comfortable, and the air conditioning was GREAT and reliable. We enjoyed to the pool and the hot tub, as well as the hammocks on the roof. The walls were thick and I never heard any neighbor of anyone on the roof.
The so-so: The wifi is good, but only really strong in the living room. It doesn't really reach into the master bedroom.
The bad: We were told someone would meet us at the airport holding a sign with our name to take us to the ferry dock, which sounded great. We breezed through immigration, got outside into the heat, and nobody was there and we waited for 40 minutes, causing us to miss the noon ferry, had to wait 90 minutes for the next ferry, and we still got charged $35 for the ride. When we got to the island we were told someone would meet us, and nobody was there either. After 10 minutes of standing around a golf cart taxi driver took pity on us, and helped connect us and get us to the room. Definitely had my family questioning our plans, but it was all smooth after that.