Gamlemsveten is a good hike, especially in nice weather. The view from the top and the TV pylon (790 m.a.s.l.) if formidable.
The view to the south from Gamlemsveten is particularly good, with a good panorama all the way to the west and north. From the east you'll see the mountains Hesten and Tverrfjellet that might block the view a bit. The path is easily passable, but quite steep. The trip takes about 2,5-3 hours normally, and it's also possible to make it at winter time since is well marked.
The route follows a graveled path all the way from the parking area. As mentioned the path can be steep, and you might also come by some lose gravel, so be careful.