whole-house rental; cottage rental
Refers to renting an entire building (often a house or cottage) rather than a room within it. Common in travel and accommodation contexts.
I booked a whole cottage rental for summer vacation.
This inn also offers whole-building rentals.
Compound of 一棟 (one building) and 貸し (rental, from 貸す). The term is straightforward and modern, with no obscure historical derivation.