Balance on arrival names the sum still due once she has come in, paid at the outset in euro or foreign banknotes, by card, or in crypto.
Balance on arrival is the name for the second of the two payments a booking can involve, and on most bookings it amounts to exactly half the fee. It is the sum outstanding at the moment she steps inside, and it is settled there and then, at the beginning, before anything else in the evening is unpacked.
Nuru has a practical reason for keeping money to the opening minutes. After the gel is out and the cover is on the bed, hands are seldom dry enough to count notes or steady a phone for a card terminal, and nobody wishes to interrupt a long glide for a transaction. The account is closed first, so that nothing remains to be remembered at the end except a shower.
Banknotes are welcome in any major currency and are reckoned at that day's exchange rate, so a traveller who landed with dollars or pounds need not go hunting for a cash machine at two in the morning. A card is equally welcome in the room, and so is crypto. The confirmation in the thread gives the sum in euros, which leaves nothing to calculate on the night beyond counting.
Where a deposit has cleared, the sum still owing mirrors it. Three hours at EUR 540 leave EUR 270 for the room; a first ninety minutes at EUR 270 leaves EUR 135; two hours reserved the day before at EUR 360 leave EUR 180. Just one booking reaches the door with nothing yet paid, and so with the whole price as its balance: one or two hours today, with one therapist, for a client the house already knows. It is an exception, deliberately narrow, and never the ordinary shape of things.
A deposit is never paid at this second moment. Notes are handed over in person, so they can appear no earlier than she does, which is precisely why they belong to the balance and not to the half sent ahead. Each rung appears on the price page, and the frequently asked questions cover smaller matters such as currencies and receipts.