MuAtsu Mattresses Arrive at Nishi-Hoppo Onsen Hotel in Shiga Kogen

TL;DR: MuAtsu mattresses are now installed at Nishi-Hoppo Onsen Hotel in Shiga Kogen's oldest hot spring area.

Showa Nishikawa, the Tokyo-based bedding company behind MuAtsu mattresses, announced that their signature sleep products have been adopted by Nishi-Hoppo Onsen Hotel in Shiga Kogen. The installation supports the hotel's sustainable tourism approach within Joshin'etsu-Kogen National Park.

The partnership connects Japan's premium sleep technology with one of Shiga Kogen's most eco-focused accommodations. Nishi-Hoppo sits in the Hoppo (発哺) hot spring area — reportedly Shiga Kogen's oldest thermal zone — where natural steam vents create the distinctive "hoppo hoppo" sound that gave the area its name.

Key Facts

• MuAtsu's "point support" mattresses are now installed in guest rooms at Nishi-Hoppo Onsen Hotel
• The hotel operates 100% natural hot spring baths fed directly from the source
• Nishi-Hoppo emphasises bamboo amenities and plastic-free initiatives as part of its sustainability focus
• The hotel sits within Joshin'etsu-Kogen National Park boundaries in a no-streetlight zone
• MuAtsu mattresses use a distinctive bumped surface designed to distribute body weight and support natural sleep positions
• The partnership was announced in March 2026 with implementation completed by May

What This Means for International Travellers

If you're planning a stay in Shiga Kogen, this upgrade addresses one of the common pain points I hear about older Japanese mountain hotels — literally. The traditional futon experience isn't for everyone, especially after long ski days or hiking. MuAtsu's pressure-point technology should provide better support for guests who struggle with floor-level sleeping arrangements.

More importantly, Nishi-Hoppo's commitment to sustainable practices makes it an interesting case study for the direction of Shiga Kogen hospitality. The National Park designation limits major development, so existing properties like this are investing in guest experience improvements rather than expansion. For buyers researching onsen property investments, it signals how established operators are differentiating themselves within environmental constraints.

Background

The first time I overlaid the Joshin'etsu-Kogen National Park boundary on a Yamanouchi-machi parcel map, I realised half the listings I'd been browsing were inside the park. The agent never mentioned it. Nishi-Hoppo sits well within those protected boundaries, which explains both its pristine setting and its focus on sustainability over expansion.

Hoppo Onsen's natural steam vents make it geologically distinct from other Shiga Kogen hot spring areas. The "hoppo hoppo" sound comes from pressurised geothermal activity rather than the standard hot water springs found elsewhere in the region. Combined with the hotel's elevation and National Park protection, it offers one of the more secluded onsen experiences you'll find within reasonable access of the main Shiga Kogen ski areas.

Editorial Note: This article synthesises Japanese-language press releases and news reports. ShigakogenHub.com is an independent resource — we don't represent any hotels, real estate agencies, or equipment manufacturers mentioned.