More than you think
This review is especially helpful for those who have or use the following: Powerchair
This place is a wee gem. Visited out of season, so no visitors centre open, but you just pop into the hotel nearby to pay and pick up a tour recording. I love this as I could wheel round at my leisure, and we were the only people there so no getting in the way. The area has lots of pre historic and Norse settlement ruins, they are so well preserved and the tour recording is so detailed you can almost fell what it used to be like to live there. A path runs around and through the settlements which is fine gravel and was very easy for my chair, however some of the recording points are in the actual ruins which aren't wide enough to get a wheelchair in, not many though. Really lovely way to spend a few hours (even nicer in Summer I'm sure).
Transport & Parking
Parking is at the local hotel, no designated bays.
For a historical site it was amazingly accessible. Yes the ramp from the carpark to the site was a bit steep and the ground a bit uneven in places, but achievable. I did however have to get my dad to go pay & pick up the recordings as the hotel had two steps to get in and no bell for attention.
Didn't use any.
Dad said the lady in the hotel was very nice and pleasant, gave him lots of info.