# The Underground Den

- Address: Núñez de Balboa 52, 28001, Madrid, Spain
- Nearest transit: Velázquez
- Google rating: 5.0 (8 reviews)
- Web page (cite this): https://www.onecoworking.com/venues/the-underground-den

## About

The Underground Den is a coworking space and business centre on the ground floor of Calle de Núñez de Balboa 52 in the Salamanca district, run by a company with international business experience that set it up to help startups and coworkers grow. Its design stands out, with bicycle-wheel lamps, colourful glass doors and white brick walls. Shared coworking desks come with fibre internet, good coffee and events: €200 a month with 24/7 access and two hours of meeting room, €150 a month Monday to Friday 9:30–18:30, €100 for mornings (9:30–14:00) or €90 for afternoons (14:00–18:30), €20 for a day pass or €5 an hour, all + IVA. Private offices for one to six people are air-conditioned, furnished with design furniture and include fibre internet, 24/7 access with CCTV and fingerprint entry, four free hours a month in the meeting room, cleaning, lighting and fees; prices are on request. There is a meeting room, space for events and networking, virtual office and phone services, and parking in the same building with 15% off for clients. The team also offers support with legal advice, funding, business strategy, sales and corporate image.

## Starting prices

Starting list prices.

- Day passes: from €20 per day
- Flex desks: from €200 per month
- Memberships: from €90 per month

## Opening hours

- Monday: 09:30–19:00
- Tuesday: 09:30–19:00
- Wednesday: 09:30–19:00
- Thursday: 09:30–19:00
- Friday: 09:30–19:00

## Amenities

Business Mentorship, Daily Cleaning Service, Highspeed Wifi, Fully Furnished, Car Parking, Administrative Support, Meeting Rooms, Air Conditioning (A/C), Event Spaces, Community Events, 24/7 Access (Members)

## FAQ

### How much does coworking at The Underground Den cost?

Coworking costs €200 a month with 24/7 access, €150 a month Monday to Friday 9:30–18:30, €100 for mornings or €90 for afternoons, plus €20 for a day pass or €5 an hour, all + IVA. Private offices are priced on request.

### What do private offices include?

Offices for one to six people come with design furniture, air conditioning, fibre internet, 24/7 access with CCTV and fingerprint entry, four free hours a month in the meeting room, cleaning, lighting and fees. Phone and virtual secretary services are available on request.

### Is there parking?

Yes. There is parking in the same building, with a 15% discount for The Underground Den's clients.

### How do I get there?

The space is on the ground floor of Calle de Núñez de Balboa 52 in the Salamanca district, a few minutes' walk from Núñez de Balboa (Metro Lines 5 and 9) and Velázquez (Line 4).

### How can I visit or ask for information?

You can contact the team by WhatsApp, phone or email, as listed on The Underground Den's website, to ask about availability or arrange a visit.

## How to book or get an offer

Day passes and meeting rooms marked bookable can be booked instantly on https://www.onecoworking.com/venues/the-underground-den. For a private office or a team space, send an enquiry from that page or to hello@onecoworking.com — One Coworking asks the operator for today's price and availability and sends back options within 24 hours, at no cost to the client.