this apartment (90 m2) has 3 bedrooms (one with double bed, other with bunk bed and one with one single bed), and a bright living/dining room with sofa.

How would the previous sentence be correctly capitalized?
Answer: This apartment (90 m2) has 3 bedrooms (one with double bed, other with bunk bed and one with one single bed), and a bright living/dining room with sofa.
containing pseudoephedrine (inn) or its salts 3004 42 00

How would the previous sentence be correctly capitalized?
Answer: Containing pseudoephedrine (INN) or its salts 3004 42 00
this is the most effective way to store all your notes without cluttering up your desk with postit and sticky notes.

How would the previous sentence be correctly capitalized?
Answer: This is the most effective way to store all your notes without cluttering up your desk with PostIt and sticky notes.
from the 6th floor there are magnificent sea, castle and mountain view from all apartments.sea star apartments have two bedrooms, one living room with american open kitchen, one large bathroom, guest toilet, store room and two balconies.

How would the previous sentence be correctly capitalized?
Answer: From the 6th floor there are magnificent sea, castle and mountain view from all apartments.Sea Star apartments have two bedrooms, one living room with American open kitchen, one large bathroom, guest toilet, store room and two balconies.