എവിടെയാണ് ശുചിമുറി?

Yes, it is a gender-neutral term for the room itself. You specify gender by adding 'Purushan' (Man) or 'Sthree' (Woman) before it.

Yes, 'Toilet' is very common and not considered rude, though 'Shuchimuri' is more elegant.

Ask a staff member: 'Shuchimuri evideyaanu?'. They will usually point you in the right direction.

Usually, you just knock. Or you can ask 'Aarenkilum undo?' (Is anyone there?).

Yes, it's perfectly normal. Just be polite and use the full phrase.

'Evide' is just 'Where'. 'Evideyaanu' is 'Where is'. You need the 'is' for a complete sentence.

In some bus stands or railway stations, there is a small fee (usually 5-10 rupees). Look for a person sitting at a desk near the entrance.

It's not 'bad', but it's very informal and a bit old-fashioned. Stick to 'Shuchimuri' to be safe.

You can say 'Enikku pettennu shuchimuriyil pokanam' (I need to go to the restroom quickly).

Most modern hotels and homes have western-style toilets. Public places often have both options.

'Muri' means room. You'll see it in 'Kidappumuri' (Bedroom) and 'Bhakshanamuri' (Dining room) too.

The core phrase is the same, but the accent might change. In the north (Malabar), they might say 'Evideya?' more quickly.

Small shops might not have a public restroom. It's better to ask 'Ivide shuchimuri undo?' (Is there a restroom here?) first.

Say 'Nanni' (Thank you) or just a polite nod.