Question: SpareFoot is an Austin-based company that provides listings for self-storage units similar to what  online marketplace and hospitality service?

full_context: Document 1: 9flats: 9flats is an online marketplace and hospitality service, enabling people to lease or rent short-term lodging including vacation rentals, apartment rentals, homestays, hostel beds, or hotel rooms. The company does not own any lodging; it is merely a broker and receives percentage service fees (commissions) from both guests and hosts in conjunction with every booking.
Document 2: Uhaul Car Share: UhaulCarShare (formerly "UCarShare") is a for-profit carsharing service offered by U-Haul in nearly 40 cities in the United States. Those with a Uhaul Car Share membership may have use of a car, billable by the hour or by the day. However, use is generally limited to three days at a time. Most often, Uhaul Car Share vehicles are operated in communities with colleges and/or universities nearby. "The goal of [Uhaul] Car Share is to give people an alternative to owning second and third cars, and to increase the use of public transit."
Document 3: CheapOair: CheapOair is an online travel agency that allows customers to book airfare, hotel rooms, rental cars, and vacation packages online, on its mobile apps, by telephone or live chat. Since its inception in 2005, CheapOair has become one of the top 5 online travel agencies in the United States and is the number 2 online travel agency in flight volume. CheapOair has won numerous awards including those from "Travel Weekly","The Stevie Awards", and the "International Service Excellence Awards". CheapOair has received recognition from "Fortune", "USA Today", and "Bloomberg Businessweek"). CheapOair has agreements with more than 550 airlines, 200,000 hotels and hundreds of rental car companies
Document 4: Airbnb: Airbnb is an online marketplace and hospitality service, enabling people to lease or rent short-term lodging including vacation rentals, apartment rentals, homestays, hostel beds, or hotel rooms. The company does not own any lodging; it is merely a broker and receives percentage service fees (commissions) from both guests and hosts in conjunction with every booking. It has over 3,000,000 lodging listings in 65,000 cities and 191 countries, and the cost of lodging is set by the host.
Document 5: The Priceline Group: The Priceline Group is a company headquartered in the United States that owns and operates several travel fare aggregators and travel fare metasearch engines including Booking.com, Priceline.com, Agoda.com, Kayak.com,
Document 6: Wimdu: Wimdu is an online marketplace and hospitality service, enabling people to lease or rent short-term lodging including vacation rentals, apartment rentals, homestays, hostel beds, or hotel rooms. The company does not own any lodging; it is merely a broker and receives percentage service fees (commissions) from both guests and hosts in conjunction with every booking. The company is considered to be one of the major competitors of Airbnb and a key vendor of the global vacation rental market.
Document 7: SpareFoot: SpareFoot is an Austin-based company that provides listings for self-storage units. The company was originally a person-to-person model, similar to Airbnb, that later developed into a marketplace for self-storage. The company now facilitates self-storage rentals between consumers and storage operators. The company was profiled as one of "America's Most Promising Startups" by Bloomberg Businessweek in 2011.
Document 8: Service provider: A service provider (SP) provides organizations with consulting, legal, real estate, communications, storage, processing. Although a service provider can be an organizational sub-unit, it is usually a third party or outsourced supplier, including telecommunications service providers (TSPs), application service providers (ASPs), storage service providers (SSPs), and internet service providers (ISPs). A more traditional term is service bureau (esp. 1960s to 1980s).
Document 9: Alterkeys: Alterkeys is an online marketplace where accommodation in Europe can be listed and booked for short term lettings. Based on the peer-to-peer property rental model, the platform allows individuals and property managers to list their unoccupied accommodation space and connect with travellers looking for short term accommodation to rent. By June 2013, over 50,000 properties across Europe were listed on the platform. The accommodation options listed on Alterkeys include apartments, castles and villas. In June 2014, the company reached 100,000 properties all around Europe.
Document 10: Forsalebyowner.com: Forsalebyowner.com is the United States largest "by owner" real estate website. It provides a real estate advertising and information service that charges a flat fee to property owners who advertise their property on the company’s Website. It created a business model that competed directly with traditional real estate firms, connecting buyers and sellers without the use of brokers. Property sellers devise and customize the content and format of their advertisement. ForSaleByOwner.com then charged to the owners a listing fee that is directly proportional to the length of the advertisement and the period of time it appears on its Web site. For an additional fee, property owners can have also list their properties on the MLS with a real estate agent affiliated with ForSaleByOwner.com. Interested buyers can use the service to search listed properties for free. However, ForSaleByOwner.com does not represent or negotiate on behalf of either the seller or the buyer. On its Website, a disclaimer clearly states that it is not a real estate agent and is legally prohibited from taking part in the actual sales transaction.
Document 11: WeWork: WeWork is an American company which provides shared workspace, community, and services for entrepreneurs, freelancers, startups and small businesses. Founded in 2010, it is headquartered in New York City. WeWork has a current valuation of roughly US$ 20 billion and manages 10 million Square feet of office space.
Document 12: Pillow Homes: Pillow Homes, Inc. operates pillowhomes.com, a hospitality and management service for vacation rentals on Airbnb, HomeAway, VRBO, Booking.com, and other online short term rental marketplaces. The company services short term and vacation rental properties in San Francisco, Los Angeles, San Diego, and Seattle areas.
Document 13: Kiwi.com: Kiwi.com (previously known as skypicker.com) is a Czech online travel agency. On its website kiwi.com it provides a fare aggregator, metasearch engine and booking for airline tickets. Its unique feature is "virtual interlining" - selling flight itineraries combining normally non-cooperating airlines, while company provides guarantees covering missed connections.
Document 14: Priceline.com: Priceline.com is an American company and a commercial website that helps users find discount rates for travel-related purchases such as airline tickets and hotel stays. The company is not a direct supplier of these services; instead it facilitates the provision of travel services by its suppliers to its customers. It is headquartered in Norwalk, Connecticut, United States. Priceline.com is wholly owned by The Priceline Group.
Document 15: Extra Space Storage: Extra Space Storage () is a US provider of self-storage units, with over 1,415 facilities across 38 states plus Washington, D.C. and Puerto Rico. Headquartered in Cottonwood Heights, Utah, Extra Space Storage is the second largest owner and/or operator of self-storage properties in the United States, as well as the largest self-storage management company.
ground_truth: Airbnb