I stayed here for three nights. Lucky me that the office is paying, otherwise I wouldn't bother.

This hotel is 25 minutes by train from Oslo central station and its location is quite tricky. It says in the website that it's wall-to-wall with Sandvika storsenter shopping mall but the entrance is actually facing a big road on the other side so it's quite hard to reach from Sandvika station, you have to go through the mall to go there easiest.

Service is average, breakfast -> They should have done better. The warm food buffet was nothing to be proud of and they can't properly make soft-boiled eggs.

I guess it's not recommended for family / pleasure traveller. It's business only.

Lets be honest : The reson you would choose this location is because you have business in Sandvika/Bærum, and cannot make it into Oslo centre.

That being said the Hotel is very well located if you do indeed have business in the area.
It is easily reached from the Sandvika station (5 minutes walk), and right next to a huge shopping mall if that is your thing.
It is also right next to the motorway, but as half the rooms face the interior courtyard (including ours) that doesnt have to be a problem.
The hotel is a typical run of the mill chain hotel. Standard business like check-in with no particular frills. The rooms are standard sized with am adjoining bath shower with their own brand of amenities - not particularly interesting. The rooms are nice and clean and with fresh linens.
Excellent free wifi throughout the facility.
The two main problems in our room (and over breakfast we heard from other guests that it was the same in their rooms) are:
1) The beds are way too soft- you will not be comfortable in this bed unless you take the top matress off the bed and place it directly on the floor. Aboslutely no support for your body in these beds, and several guests at breakfast complained of backache. So unless your regular hangout is a french horehouse, you will not be comfortable here.
2) the aircon does not regulate beyond 'warm' , 'hot' or 'sauna' - we both woke up in the middle of the night and could not stand the heat even though the aircon was on the lowest possible temeprature setting. Seems the hotel thinks that when it is cold outside, the guests only need heat in their rooms . Again this was confirmed by other guests at breakfast.
Would I stay here again: No way!

Staff doesn't care to their guess. Not polite and doesn't know how to deal with guess. Breakfast buffet is terrible.

I stayed twice at this hotel in one year, each time for 4 nights.
The rooms are old and quite dirty (the curtains, the blankets, lots of hair on the towels... ) but they are big.
Twice I had a room with view on the highway and with the noise. First time I had an allergy to the sheets and/or the towels (probably the starch) and I explained the problem to a lady at the reception. Her answer was I can't do anything... So I found myself a solution: I slept on the blanket with pants and a sweatshirt, and a shirt on my pillow in order to avoid my skin touch the sheets...
The second time, I brougth my sleeping bag, but apparently it is not sufficient, allergy again, so the towels are also contaminated. And I couldn't sleep the first two nigths because of the noise of the air conditioning. I decided to call the reception and guess what the guy said: no solution! They know that they have problems with the air conditioning, but there is no room available and no technician around there, so I have to deal with it alone... Nice for the meeting...

I haven't chosen the hotel, it was booked by my society, but next time I will ask for another hotel. I normally never complain about hotels or restaurants (the restaurant is ok and the waitors nice) but this time, it is incredibly bad. The worst is really the service you get for the high price you pay. People at the reception are really not helpful.

Also, I forgot, my husband tried to phone me several times, and it was impossible to reach me, the person on the phone was pretending not understanding the room number (even if I then told them that somebody would call), I finally phoned him from the hotel the first time, and I thus had to pay the communication at their price...
Thank you so much Thon Hotel...