Instead of a glass door on the shower you could have another door like the laundry side so you would be able to have it in the open of the studio appartment but no one would be able to tell it is a shower (no need for wasted area to have a bathroom | Compact Laundry / Shower Cabin Combo for Small Spaces by Vismaravetro
How to Choose the Right Paint Finish: Flat: Ceilings. Eggshell: Bedrooms, Living rooms, Dining rooms. Stain: Kitchen, Laundry Room, Bathrooms, Hallways. Semi-Gloss: Trim & Molding. Kitchen Cabinets. Doors. Woodworking. Gloss: Used often on furniture for a lacquered look.