Thon hotel Astoria is consistently the cheapest Thon in Oslo,but the rooms are tiny and basic. There are other Thon hotels that are better and only slightly more expensive. Contrary to popular myths,Oslo hotels are not particularly expensive during the summer vacation,and even less so during weekends.If you want to stay longer there are offers for 3 and 4 days,even in SEPT/OCT the weekend prices are substantially lower than the MON-FRI prices,and they always include a breakfast bufet that is very good by N.A standards,its the litle things like a taxi ride,a tram ticket or a botle of soda from a convenience store that is crazy expensive in Norway,sort of 2 times Manhattan prices.