JJ Lake Business Center, located at 340 East Middlefield Road, Mountain View, CA 94043, is a versatile coworking and event venue in Silicon Valley. The center offers flexible workspace options—including meeting rooms, event space, dedicated desks, and private offices—backed by modern amenities and strong event facilities. Run by a team led by Yifu Liu, it serves local startups, remote workers, and companies needing occasional professional spaces.
Facilities & Details
| Feature | Details |
| Address | 340 E Middlefield Rd, Mountain View, CA 94043 |
| Contact | Phone: (650) 695-5361; Alternate: 415-886-5404 (Yifu) |
| Website / Email | Website: jjlaker.com |
| Operating Hours | Mon–Fri: ~10:00 am–6:00 pm; Sat–Sun: Closed |
| Workspace Options | Meeting rooms (8–25 people), dedicated desks (~$450/month), event space, private offices (1–15 people) |
| Room Rates | Meeting room from $60/hour; event space (~193 capacity) ~$300/hour with $300 booking fee |
| Amenities | Wi-Fi, A/V equipment, whiteboards, coffee/tea, kitchen, bike storage, showers, on-site parking; includes utilities/janitorial/furniture |
| Transport & Access | Near Caltrain station; walkable to Google/LinkedIn offices. On-street parking and free on-site parking available |
| Other Info | Event venue capacity up to 193 people; cancellation refunds: full if 7+ days in advance, 50% if 24h–7 days, none if <24h |
Google Maps Location
Pros & Cons
Pros:
- Versatile Space Offerings: Offers a wide range of space types—coworking desks, private offices, meeting rooms, and a full event venue.
- All-Inclusive Amenities: Utilities, Wi-Fi, kitchen, coffee, and janitorial services are included, simplifying booking and usage.
- Convenient Location: Close to tech giants (Google, LinkedIn) and Caltrain station, making it ideal for professionals and event attendees.
- Flexible Booking Options: Hourly to monthly terms available, serving both short-term events and longer-term workspace needs.
- Clear Pricing & Policies: Transparent pricing (e.g. meeting rooms from $60/hr) and a defined cancellation policy are helpful for planning.
Cons:
- Limited Weekend Availability: Closed on weekends, which may be inconvenient for some users.
- Mixed Cleanliness Feedback: A review noted issues: “Room was dirty, needed vacuumed … smelled like food, AC was not good”—suggesting variable maintenance standards.
- Transit Score Moderate: Transit accessibility is limited (Transit Score 40/100), meaning most visitors may need a car or ride-share.
- Higher-End Pricing: Monthly dedicated desks (~$450/month) and hourly rates ($60+) may be on the higher side for budget-conscious users.
Summary
JJ Lake Business Center is a well-equipped coworking and event venue in Mountain View with strong flexibility in workspace formats, inclusive amenities, and a strategic location near major tech hubs. Ideal for businesses needing event space or flexible offices. However, for weekend usage or highly budget-sensitive users, its limited weekend hours and premium pricing may pose challenges.
