High-end rental network platform Sonder has raised a Series C round of investment to the tune of $85 million.
What is unusual about the U.S.-based company is that it has now boosted the financial support coming in to $135 million, and yet it is practically unknown.
The stealthy style of Sonder is in stark contrast to other, publicity-hungry brands and platforms operating in the private accommodation.
Last week's funding news coincided with an article in Forbes where its founders explained for the first time in four years what the company is doing and its aspirations.
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The Series C comes via lead investor Greenoaks Capital, with participation from Greylock Spark Capital, Structure Capital and Harbourvest.
Previous investments included seed rounds of $8 million and two other deals worth $32 million and $10 million - the latter coming over two and half years ago.
The rental network phenomenon is not new, with Oasis Collection, OneFineStay and others appearing on the scene in recent years.
Units have consistent design features in each city, concierge services and 24/7 support, with Sonder picking up the lease on the property.