Wikipedia
An apartment hotel (also residential hotel, or extended-stay hotel) is a serviced apartment complex that uses a hotel-style booking system. It is similar to renting an apartment, but with no fixed contracts and occupants can "check-out" whenever they wish.
The standard zoning definition in the United States is:
"Apartment hotel means a building designed for or containing both apartments and individual guestrooms or rental units, under resident supervision, and which maintains an inner lobby through which all tenants must pass to gain access to apartments, rooms or units."
An apartment hotel complex usually offers a complete fully fitted apartment. These complexes are usually custom built, and similar to a hotel complex containing a varied amount of apartments. The length of stay in these apartment hotels is varied with anywhere from a few days to months or even years. The people who stay in apartment hotels use them as long-term accommodation; therefore, the hotels are often fitted with most things the average home would require.
Usage examples of "apartment hotel".
Mason gave one quick look at the cab, flipped his cigarette into the gutter, stepped back into the entrance of the apartment hotel and waited until he saw Della Street, her hair a bright auburn, step from the cab.
However, it left no back trail, and when The Patent Leather Kid entered the apartment hotel where he maintained a penthouse, he might as well have appeared from thin air for all the trail he had left.
Roark walked through the shell of what was to be a gigantic apartment hotel, and stopped before an electrician at work.
Then she picked up the phone and gave the apartment hotel operator his business number.
It seems the colonel was staying in an apartment hotel, and somebody claims to have found him there last night, dead.