This is an adrenaline junkie's paradise! I took a train from Innsbruck, and then a bus 2 stops. Google maps knows the bus number and approximate pick up times. You need an app to pay for the bus (which I didn't have), but since I was only going 2 stops, the driver just waived me on back. It's not an easy walk from the bus stop, especially with luggage. I recommend taking a taxi or hitching a ride. Google maps shows a dotted line over the raging River, but there's actually a bridge you can walk across. You can arrange a free ride to and from the train station if they know ahead of time.

My double room was right next to the water area. Great views! Room had a nice sink and shower, small seating area, and 2 slim single beds with comfy bedding. The armoire contained hangers and a blow dryer. A different social activity is offered nightly. I signed up for a free yoga lesson, but it was cancelled because only 2 people signed up. I was disappointed that I wasn't contacted about the cancellation because I could have made other plans.

If you stay onsite, entrance to the water area is included, otherwise it's €30/day for adults. I used this fact to justify the high price of accommodations for me as a single person. I spent €351 for 2 nights which included 3 days admission to the water area and buffet style breakfast. It would be more reasonable to split the cost by sharing with someone. The water area includes blobbing, giant slip and slide, diving platforms, water slides, water cannon, inflatable course, slack line, trampolines with crash mat, etc. Go-pros are free to use if you buy an SD card (or bring your own). You can get into the water area before check in and stay after check out too! The luggage storage was not staffed, but I took my passport and wallet to the park and there are lockers for a €1 deposit. Speaking of deposits, you can also rent chairs and umbrellas for €2 plus deposit.

If you want to use the diving platform lift between 10 and 20m, you might need to wait until after 2pm to increase the chances that there are enough lifeguards on duty. Definitely try the giant slip and slide! Outside the entrance, there's a self-service cafeteria with outdoor seating. It was a perfect place to watch people blobbing and sliding... great poolside entertainment! I recommend wetsuits if you tend to get chilly. The slides and diving area is shaded, and there were many shivering little kids even though it was a nice, hot day. Wetsuits aren't technically allowed on the slides, but it wasn't a problem for me. I think the lifeguards are pretty liberal!

In addition to the water area, there are activities you can add on for an additional cost: high ropes course, wake area, rafting, climbing, canyoning, biking, etc.