Hotel is fantastic - highly recommend. The spa is unique and has something for everyone. Great for couples. The staff were extremely helpful and friendly. Everyone was able to speak English also.
Hotel is very modern with water proof wristbands for opening your room, accessing the lifts, spa and lockers. The hotel encourages a digital detox (no TVs in the room and there's a box for you to leave your phones in- they're not allowed in the spa anyhow). FYI There was no safe in the room.
We didn't realise what we were booking when we originally booked - there's a lot of naked bathing and this is encouraged by the hotel. You are not allowed to wear swimwear in the saunas and steam rooms (except on Tuesdays) but you can cover yourself with towel. It's an unusual experience for UK/US visitors perhaps but for the Norwegians and many people from Europe it's very natural, safe and normalised. Despite this, it exceeded our expectations and after the initial shock of the relaxed attitude to nakedness we got used to it and enjoyed it.
We booked massages also which were excellent.
The breakfast selection was ample and there was plenty of food options for the rest of the day.
Mini bar was nicely stocked.
Spa accessories were reasonably priced (if you want to wear a swimsuit, you have to buy their one - they have a choice of styles and sizes).
The hotel is an easy journey from Oslo city centre (81 bus for 30 mins).
Icing on the cake - oudoor jacuzzi looking at beautiful snowy forest.