The eight hour block on a short trip
The overnight is a fixed block of eight hours for one guest with one therapist, priced as a night, with both ends of it written down before anybody travels.
Overnight is a format, not a mood, and on a trip of one or two nights it is the format that changes the shape of the whole stay. Eight hours for one guest with one therapist at a single fixed price, and the start and the finish both put in writing before the journey begins, so nobody is working it out at six in the morning.
The other three columns
The block also comes in three larger versions: two therapists attending one guest, two guests sharing a single therapist, and two guests with a therapist each. Each of those versions is priced in every profile on the roster, alongside the hourly rungs, so the comparison can be made in one place rather than assembled from two.
What it is not
It is not eight hours of continuous work on a body, and nobody pretends otherwise. A block that long holds a long session, a stretch of sleep, quiet, and whatever the two of you settle on when you wake; what it includes at any point is hers to decide, and she says where her limits are at the start. On a single night trip the practical appeal is different again: the block absorbs the evening and the morning both, so an early departure needs no separate plan around it.
What it asks in advance
Half of the figure travels before she does, on every overnight without exception, because the block takes an entire night out of a week. On the single guest block the split is exact, one half sent ahead and its twin left waiting at the door. The same notice scale applies to it as to an hour, and the booking terms set out what each level of notice keeps.