This was an amazing vacation! My wife and I stayed here for 2 weeks for our honeymoon, and loved every minute of it! The house is exactly as the pictures show it, so it is EXCEPTIONALLY nice. Initially we planned on not purchasing the AC for the 2 weeks we were there, but after the first day, we decided it was worth it (very hot and humid). We spent a lot of time in the pool and on the beach while we were here.
Agnes, the property manager, was VERY helpful. When we needed advice on places to eat and what activities to do, she made several recommendations, and even went so far as to set up the tours for us. While here, we did the monkey quad ATV tour, which was awesome! We also just rented an ATV from them for a day and toured much of Nosara and neighboring towns ourselves. As long as you follow the road signs and generally stay on main roads, you wont get lost! This is a great recommendation if you want to get to see some amazing sights in Nosara. It includes a short snorkel trip at an awesome beach that made the trip that much better. We also did the Miss Sky Canopy Tour zip lining, which is also a must for the trip!
The beach and a couple of small cafes are within walking distance of the house, but they are anywhere between a 15 and 30 minute walk. We rented an ATV for a day, and found that it was very convenient to have. I would recommend renting a car, ATV or bike while you are here, but its not a necessity. I would advise stopping at the market when you first arrive in Nosara if you dont plan on eating out for every meal. We ended up having to make a couple of trips, and each time we went we had to take a taxi (which is $30 total). We also had to take a taxi any time we went on a tour, which was also $30 total.
We also rented a surf board for a day, and instead of investing in surf lessons just looked up tips for learning to surf and taught ourselves. People that are already surfing are always more than willing to give you advice as well.
US currency is accepted, but only use bills that are $20 and smaller. Most of the places (such as ATV tours, zip lines and several cafes) only accept cash, and they will give you your change in Costa Rican Currency. There is an ATM in Nosara, but I would recommend just bringing plenty of cash with a credit card as a back up plan. There is a safe in the house that is bolted to the wall with a lock on it to keep valuables in.
There is wifi, a TV and telephone in the house if you need them. This place is amazing!