It would have been nice to have the grass around the property cut. We had a frisbee and volleyball that we weren't able to do much with. On the other hand, the covered deck was wonderful, especially since it rained most of the weekend. It had lots of comfy seating and blankets to cosey up with outside.
The house also had 2 very good seating areas inside, upstairs and downstairs. You might want to bring bottled water - although the water was drinkable, it wasn't very tasty. You're also fairly close to the highway, so there's a bit of traffic noise, but it wasn't unbearable and you don't hear it at all inside the house. The place had excellent parking and was close to everything we needed in Sylvan Lake.