Hiroki Horiguchi started Reivalue Inc. in 2018 to support local neighborhoods at risk of losing their population. Japan is currently facing a problem of an ageing population with a low birth rate, which is resulting in small neighborhoods decreasing in favor of large cities with more opportunities. A declining population in a particular area also results in abandoned properties (akiya), and there has been a recent drive for providing incentives such as lowering the cost of land and the building to encourage people to take ownership and revive the properties. The goal is that by renovating akiya properties in suburban neighborhoods at risk of decline, and focusing on international visitors, to provide a much needed boost to local communities.

Reivalue started the Sano San Chi Project, which aims to take over akiya buildings and renovate them into a modern guesthouse with the conveniences of a boutique hotel, while keeping elements of traditional Japanese-style housing, such as the use of tatami mat flooring. The project moved forward from concept to reality through crowdfunding online. The funds raised allowed them to open the first guesthouse.

There are currently 10 guesthouses spread across the Kansai region, with seven properties located in the Senshu area. One of the closest properties to Kansai International Airport is the Waraku property, which is located in Izumisano City, and only two stops away from the airport at JR Hineno Station.

Waraku, a guest house that is part of the Sano San Chi Project, was built in 1980, and recently renovated in April 2019. It is ideal for small groups and families looking for a large property for a mid-term or long-term stay. The property comes with on-site parking areas for two vehicles, which can be closed off using a gate or a shutter for extra security. The bedrooms are spacious and luxurious, complete with traditional tatami flooring. Large sliding doors can be manipulated to create large rooms, or to section the space into smaller rooms, allowing for up to 18 people to stay.

The accommodation has purposefully not been fitted with items that might be considered distracting, such as gaming equipment, so that guests are able to experience a traditional Japanese lifestyle. However, a living room with a TV is available for families and groups to socialize. The large kitchen is complete with cooking utensils, ideal for those who want to shop locally and cook using famous Senshu vegetables. A large Japanese-style garden is at the front of the property, in which guests can relax. The property also has one bathroom and two toilets for the convenience of larger groups.