Keystone Partners Invests in Apartment Hotel Development Fund in Akihabara
Keystone Partners has announced an investment in 'Sumu Fund No. 3' for developing an apartment hotel in Akihabara, Tokyo. Targeting the 'Sumu' brand partnered with Airbnb Japan, the project aims to capture the growing inbound demand for group and long-term stays.
📋 Article Processing Timeline
- 📰 Published: April 23, 2026 at 21:31
- 🔍 Collected: April 23, 2026 at 13:01
- 🤖 AI Analyzed: April 24, 2026 at 00:15 (11h 13m after Collected)
Keystone Partners Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Tomoaki Tsutsumi; hereinafter 'KSP') has announced that its 'Japan Revival Sponsor Fund No. 6 Investment Limited Partnership' has invested in 'Sumu Fund 3 G.K.' (hereinafter 'the Fund') to develop an apartment hotel in Akihabara, Taito-ku, Tokyo.
The Fund targets the hotel brand 'Sumu powered by Airbnb Partners' (hereinafter 'Sumu'), which was created in collaboration with 'Airbnb Partners,' a Japan-specific business community launched by Airbnb Japan to foster the growth of the home-sharing market. Sanko Asset Management Co., Ltd. (Headquarters: Chuo-ku, Tokyo; President: Shigeo Takei; hereinafter 'Sanko Asset Management') planned and formed the Fund as the asset manager, and KSP participated in the investment alongside Sanko Asset Management through a silent partnership (Tokumei Kumiai) agreement. This marks KSP's second investment in a development fund for the Sumu brand, following a previous investment in October 2025.
Inbound tourism demand in Japan remains robust, with the number of international visitors exceeding 40 million for the first time in 2025, setting a new record. Particularly in Tokyo, there is an increasing demand for group accommodations for families and large parties. Traditional hotels, which primarily offer single and twin rooms, are often unable to adequately meet this need, leading to a growing demand for apartment hotels suitable for medium- to long-term stays and large groups.
KSP's strength lies in its flexible financing methods, combining both debt and equity to provide optimal solutions tailored to the needs of companies and projects. To date, KSP has built a strong track record in the real estate sector, including investments in various hotel projects and capital and business alliances with real estate companies. KSP aims to continue capturing investment opportunities in high-growth markets to provide stable returns for investors while supporting businesses that contribute to local economic revitalization and solving social issues.
[Property Overview]
Property Name: Hotel Sumu Akihabara North powered by Airbnb Partners (Tentative)
Scheduled Completion: July 2028
Location: 2-5 Akihabara, Taito-ku, Tokyo
Total Floor Area: 1,843.72 sqm (approx. 557.7 tsubo) (Tentative)
Structure/Scale: Reinforced Concrete (RC), 9 floors, 31 rooms
The Fund targets the hotel brand 'Sumu powered by Airbnb Partners' (hereinafter 'Sumu'), which was created in collaboration with 'Airbnb Partners,' a Japan-specific business community launched by Airbnb Japan to foster the growth of the home-sharing market. Sanko Asset Management Co., Ltd. (Headquarters: Chuo-ku, Tokyo; President: Shigeo Takei; hereinafter 'Sanko Asset Management') planned and formed the Fund as the asset manager, and KSP participated in the investment alongside Sanko Asset Management through a silent partnership (Tokumei Kumiai) agreement. This marks KSP's second investment in a development fund for the Sumu brand, following a previous investment in October 2025.
Inbound tourism demand in Japan remains robust, with the number of international visitors exceeding 40 million for the first time in 2025, setting a new record. Particularly in Tokyo, there is an increasing demand for group accommodations for families and large parties. Traditional hotels, which primarily offer single and twin rooms, are often unable to adequately meet this need, leading to a growing demand for apartment hotels suitable for medium- to long-term stays and large groups.
KSP's strength lies in its flexible financing methods, combining both debt and equity to provide optimal solutions tailored to the needs of companies and projects. To date, KSP has built a strong track record in the real estate sector, including investments in various hotel projects and capital and business alliances with real estate companies. KSP aims to continue capturing investment opportunities in high-growth markets to provide stable returns for investors while supporting businesses that contribute to local economic revitalization and solving social issues.
[Property Overview]
Property Name: Hotel Sumu Akihabara North powered by Airbnb Partners (Tentative)
Scheduled Completion: July 2028
Location: 2-5 Akihabara, Taito-ku, Tokyo
Total Floor Area: 1,843.72 sqm (approx. 557.7 tsubo) (Tentative)
Structure/Scale: Reinforced Concrete (RC), 9 floors, 31 rooms