in that case gozaimasu is used as"desu" and it is also another form of "aru" "gozaimasu" is used with HUMILITY some japanese uses it to show their politeness,and in wrong ways:( for example, "nanika syumi wa gozaimasuka?(do you have some hobbies?)" is WRONG u must use "oaridesuka?" instead of it :) And "irassyaru" instead of gozaimasu that means"desu",when you want to express your politeness

de gozaimasu = desu "gozaimasu" is the neutral polite form of "arimasu". In order to replace "desu" you use "de gozaimasu".

"gozaimasu" doesn't mean "very". In Japanese there are some modesty words. "gozaimasu" is modesty word of "desu".

in this context 'gozaimasu' is politer form of 'desu', but i think this use is not very often