First of all, I think the Majestic Hotel would be the right location, but I have doubts as far as the costs are concerned.

as 在这里是连词，表示"就...而言"的固定搭配用法。 far 本义是"远的"，在这个固定搭配中表示"程度"或"范围"。 as far as 构成固定搭配，表示"就...而言"或"在...范围内"。 are 是be动词的复数形式，在这里与concerned搭配使用。 concerned 是动词concern的过去分词，意思是"涉及、关系到"。 as far as...are concerned 是完整的固定搭配，意思是"就...而言/而论"，用于引出讨论的特定方面或范围。