Radisson hotel is a nice place to stay and even a perfect venue for any business conference. When I visited
Nepal for doing some research and stayed in his hotel.
My research was about the
Kathmandu valley and staying in this hotels was very comfortable access to anywhere. May be more than a month, I was there and completed my research on Kathmandu, Lalitpur and Bhaktapur.
The most thing I like in this hotel was the rooftop swimming pool, really I enjoyed it. Also it offered me a spectacular view of the surrounding mountains and the city. It has safe deposit locker, mini bar, coffee/ tea making facilities, air condition etc.,
So I think this is the best choice for your friend, so just contact them on 1 800 333 3333 and book the room.