Our sixth location, in the new FOUR quarter. On the 21st and 22nd floors you work in the heart of the banking district, with enhanced soundproofing.
from €1,999 per monthfrom 1 month Term21st and 22nd floor
Aqua Tower, formerly T4, is part of FOUR Frankfurt at Junghofstraße 9. Since September 2026, k1 BusinessClub has been here on the 21st and 22nd floors. Hauptwache and Alte Oper are a few minutes' walk away.
The offices for 1 to 2 and 2 to 4 people are fully equipped and ready to use. Gigabit fiber, ergonomic furniture and access around the clock are included. A personal contact is on site.
All prices are starting prices, per month, plus VAT. Terms from one month.
Your workspace in the new FOUR quarter in the heart of the banking district. If you need more quiet, you can move into a private office in the building.
For freelancers, consultants and small teams looking for a quiet place in the banking district. The office is fully equipped, so you move in and get started.
A team office with enhanced soundproofing. Electricity, cleaning, internet and coffee, tea and water are included in the flat rate.
5.0 ★★★★★
1 review for k1 BusinessClub Aqua Tower
All reviews on GoogleExcerpts 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
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
We installed enhanced soundproofing on both of our floors. That makes the offices a retreat for focused work and confidential conversations. Instead of volume, we focus on less bustle, more discretion and a dedicated contact on site.
Junghofstraße connects the banking district with the shopping streets. Banks, law firms, restaurants and hotels are right on your doorstep. Your team gets here easily by S-Bahn and U-Bahn.
Our community management team is always on site and looks after you and your guests.
1 Gbit/s symmetrical fiber internet, available to all users.
Print free of charge or at greatly reduced cost.
Specialty teas and coffees plus filtered water at no extra charge.
Charge your electric car while you work.
A secure, lockable bike shelter.
Our in-house cleaning team keeps your office tidy every day.
After a workout or for a fresh start to the day.
You can get into your office and the community area 24/7.
The rooms look better in person than in photos. Tell us how many desks you need and we'll show you the right offices at Aqua Tower.
+49 69 8088 5599The form is loading. You can also reach us directly at +49 69 8088 5599.
We reply within one hour during office hours. We only use your details for this inquiry.
Yes. Our location at Aqua Tower has been open since September 2026.
On the 21st and 22nd floors of Aqua Tower at Junghofstraße 9.
The Hauptwache and Alte Oper stations are a few minutes' walk away.
One month. After that, your office is cancellable monthly if you wish.
Yes. We provide conference rooms at Aqua Tower on request and you can add rooms at Main Tower and at Junghof by the hour or by the day.
Yes. Every office at Aqua Tower includes the business address. Even without an office, we offer it at FOUR Frankfurt as a separate package.
Yes. On our UniFi network we can even set up your own VLAN and a private company Wi-Fi for your business. That is how banks and international law firms connect their IT with us.
The office for 1 to 2 people starts from €1,999 a month, the office for up to 4 people from €3,999. Electricity, cleaning, internet and coffee, tea and water are included in the flat rate. All prices plus VAT.
We installed enhanced soundproofing on both of our floors. That makes the offices a retreat for focused work and confidential conversations.
Yes. The price for your coworking desk at Aqua Tower is available on request. If you need more quiet, you can move into a private office in the building.
Above the rooftops of the banking district.
Conference center on the 32nd floor, right by the trade fair grounds.
Central, between Opernplatz and Goetheplatz.
In the heart of the city, right on the Zeil.
This is where it all began in 2011.
