The CEO suite is his office, probably with lots of amenities, some of which are still part of the "suite" even if they are not attached. A bathroom, for sure, and likely a gym and a parking space. I think it may also be a play on words for "sweet" as in, he had a sweet deal.
The German pronounciation of Bloch's "ch" would be the hard K (or the gutteral noise as in the composer, Bach). But in English, that ch could be the ch in both ends of Church. If we pronounced Mr Bloch's name as if it were spelled Blotch, then it would sound very much like the other word, botch, which means to do a poor job of something. It was a very wise move for him to change the spelling.
Many times, spellings were changed at the point of immigration in the 18th and 19th century. The immigrants couldn't spell even their own names. They told the immigration officer, "my name is Tomas Bloch" and the officer wrote what he heard, "Thomas Block".