U can see the map for relationship of toyoko inn and 天王洲monorail and 天王洲臨海缐stations and the station names (top one in the last photo is 臨海缐and lower station name is monorail. If u type 天王洲in navitime, I think u can choose either of these 2 stations. If u go to 新宿(seer route map), no interchange required as 埼京線is connected to 臨海缐directly. U can go to 新木場 for interchange to Disneyland. Aeon is at shinagawa seaside and 台場 can also be reached with this line.
Monorail brings u from airport 羽田 to 天王洲in 10 mins.