'Hukkunud Alpinisti' hotell

I like quite a lot the book which movie is based on, one of Strugatski's best (it's a bit too short tho). Strugatski's wrote also movie script, but it's much weaker. Some details are changed, some left out, and the changes just don't make much sense. Any way, even if I don't like movie much, most of the cast is good, and helps visualizing characters when reading the book. Maybe except Mrs. Moses... and du Barnstocre who simply isn't in movie. Glebsky also looks a bit fake at times, partly maybe because of dubbed voice. Also, was it that hard to make something that looks like alien robot power source, so they could actually show it? That and some other scenes look quite cheap...