..you mention the closed in feeling and i leave bathroom door half open/half closed and tied back my fabric shower curtain and bought a really cheap see through plastic one - so when am in shower i can see the rest of the bathroom, it lets the natural or bathroom light in; even can still see door, mirror on wall etc. Have done this for many years and curtain is cheap enough to buy new one every few months... for anyone who finds it claustrophobic and doesn't have a glass shower door, this can be a cheap alternative