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View of the Frankfurt skyline in the evening light
  1. Virtual office
  2. Aqua Tower

Junghofstr. 9 · Banking district, in the new FOUR quarter

Virtual office at Aqua Tower, FOUR Frankfurt

Junghofstraße 9, in the new FOUR quarter in the banking district. Your address at Aqua Tower, our newest location on the 21st and 22nd floors.

from €259 per monthRegistered office from Comfort

Inquire about a packageCompare packages

FOUR Frankfurt is the new quarter in the banking district and shapes the skyline. Aqua Tower is one of its towers. With a business address at Junghofstraße 9, you use this address for your legal notice, business cards and business stationery without renting office space long term. Even if your team works remotely or internationally, your address stays in Frankfurt.

For the commercial register, business registration and legal notice (imprint), choose Comfort or Comfort plus, because these packages include an address you can register. Basic is your prestigious mailing address. Comfort plus includes a local Frankfurt number (069) forwarded to a German number of your choice. If you like, you can add call answering in your company's name for €199 per month with the first 50 calls included.

Packages at Aqua Tower

Choose your package

Starting prices, per month, plus VAT.

Basic

from €259

per month, plus VAT

  • Your prestigious mailing address
  • Mail handling and forwarding (up to 10 letters a week)
  • Meeting room booking
  • Secretarial service
Inquire about Basic
Registered office address

Comfort

from €298

per month, plus VAT

  • Your business address you can register for your company
  • Mail handling and forwarding (at no extra cost)
  • Meeting room booking
  • Secretarial service
Inquire about Comfort

Comfort plus

from €377

per month, plus VAT

  • Your business address you can register for your company
  • Mail handling and forwarding (at no extra cost)
  • Meeting room booking
  • Secretarial service
  • Local Frankfurt number (069) forwarded to a German number of your choice

Optional add-ons

  • Call answering in your company's name for €199 per month plus VAT, first 50 calls included
Inquire about Comfort plus

Mail and reception at Aqua Tower

Our team accepts letters and parcels for you every working day. We hold your items, forward them to the address of your choice or notify you, from daily forwarding to a combined delivery once a week. If a client drops by unannounced, our reception team welcomes them and lets you know right away.

Meetings and client appointments

We provide conference rooms at Aqua Tower on request. You can add rooms at Main Tower and at Junghof by the hour or by the day. We handle the booking, which is included in every package. If you are expecting a client, we put up your company sign at the office entrance on request.

Google reviews

What our clients say

5.0 ★★★★★

1 review for k1 BusinessClub Aqua Tower

All reviews on Google

Excerpts from public Google reviews, as of October 2026. Reviews are shown in their original German.

Andre K.Aqua Tower

★★★★★

„Ein richtig guter Ort zum Arbeiten. Die K1 Büros im neuen Aqua Tower sind modern und hell, und die Aussicht über Frankfurt beeindruckt mich jeden Tag aufs Neue. Das Team vor Ort ist immer hilfsbereit und sorgt für eine angenehme, professionelle Atmosphäre. Klare Empfehlung!“

Google review

Read 2 more reviews

Jair S.Main Tower

★★★★★

„Hochwertig ausgestattete Büros mit einer einzigartigen Aussicht. Alle Mitarbeiter von K1 sind ausgesprochen freundlich und hilfsbereit. Wir sind sehr froh ein Teil der Community zu sein.“

Google review

A. I.Main Tower

★★★★★

„Die Zusammenarbeit mit K-1 BusinessClub GmbH ist höchst professionell. Die über K-1 flexibel anmietbaren Büros und Konferenzbereiche im 37. Geschoss des Main Tower werden für Mieter individuell bereitgestellt und sind nicht nur aufgrund des beeindruckenden Ausblicks über Frankfurt repräsentativ.“

Google review

Inquire about a package

Your address at Aqua Tower

Tell us which package you'd like. We'll send you a quote and go through the next steps with you.

+49 69 8088 5599

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Questions about the virtual office at Aqua Tower

Can I use Junghofstraße 9 for the commercial register and legal notice?

Yes, with Comfort or Comfort plus. These packages include the business address you can register for the commercial register, your website's legal notice (imprint) and business stationery. Basic is your prestigious mailing address.

How often is my mail forwarded?

You decide, from daily forwarding to a combined delivery once a week. You can also pick up your mail at reception. With Basic we forward up to 10 letters a week, with Comfort and Comfort plus at no extra cost.

Is there a 069 number and call answering?

With Comfort plus you get a local Frankfurt number (069) forwarded to a German number of your choice. You can add call answering in your company's name for €199 per month with the first 50 calls included.

What happens if a client drops by unannounced?

Our reception team at Aqua Tower welcomes your guests, takes down their request and lets you know about the visit right away.

Can I book meeting rooms?

Yes. We provide conference rooms at Aqua Tower on request. You can also add rooms at Main Tower and at Junghof by the hour or by the day. We handle the booking.

How much is a business address at Aqua Tower?

Basic starts at €259 per month, Comfort at €298 and Comfort plus at €377, each plus VAT. With Comfort plus you can add call answering for €199 per month.

Is there a company sign at Aqua Tower?

Yes. If you are expecting a client, we put up your company sign on request at the entrance to our offices on the 21st and 22nd floors. What is possible depends on the building's rules.

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