Dear Khun Tanik
Please find below my comment for your information and further action
1) Guest Room Floor Finishing : Floor Tile ( homogeneous tile ) is acceptable for floor finishing but please send us final selection for review and approval.
2) Guestroom Door : Guestroom door width at 900 mm is acceptable and must be Fire Rated Door ( 1 Hour ). We strongly recommend to have Door Closer( concealed type ), Door Viewer, Electronic Door lock , Secondary Chain Lock, and Drop Seal and Rubber Seal on door as CHR standard.
3) Guestroom Corridor floor finishing : We recommend soft surface ( Carpet / Carpet tile ) for this project.
4) Guestroom Wall : It may not necessary to build double wall but we recommend STC at 50 -53.
For your information please.
Best Regards
Pramote T