We stayed at the Thon Rosenkrantz 2 summers ago. A Rick Steves tour was also staying here during our visit. During our stay most of Scandinavia was having a heat wave. It is not common for hotels in Norway (and other Scandinavian countries) to have air conditioning. So we had to sleep with windows open which was not pleasant due to noise and light. Some people may not have been bothered by the room temp but we were.
The breakfast was really good at this hotel and that was included in our stay. They did advertise on their site that they have a complimentary meal early in the evening also. However, we learned on arrival that this is not offered during busy/peak season something our RS guidebook highlighted but did not mention the seasonality. Wasn't a big deal to us as but just thought I would mention it. Overall it's an okay stay but if I were to be back in Bergen I would look at other options first.