ᐅ Option to heat a basement of about 70 m²

Hello everyone,
I am building a townhouse with a general contractor that includes a basement intended for utility purposes (2.50m (8 ft 2 in) structural height).
The basement has external wall perimeter insulation, ETICS insulation (exposed wall), and a frost skirt, but no insulation under the slab.
For the house (160m² (1720 sq ft) excluding the basement), a floor heating system connected to a Rotex air-to-water heat pump is planned.
For now, I have only planned the basement as a utility space.
Question:
What is the best way to prepare the heating for the basement? The goal is to be able to use the rooms in the future as an office or gym.

From my research, I have found three options:
- Underfloor heating: expensive, requires a thick screed, and reduces ceiling height
- Radiators: I am not sure if radiators in the basement can be combined with underfloor heating on the upper floors
- Electric heating: electricity costs, but flexible

Do you have any other suggestions?

Thanks for your opinions.

The question is, what type of heating system do you have? It is not accurate to say that underfloor heating is always expensive. The usage scenarios are also very different: Office – you sit all day and hardly move. In a gym, there is a lot of physical activity.

What heating system is installed, and what are you aiming to achieve?

Vicky Pedia schrieb:

The question is, what kind of heating system do you have? It's not accurate to say that underfloor heating is always expensive. Also, the usage is different: office – you sit all day and hardly move; gym – movement is expected.
What heating system do you currently have, and what do you want to achieve?

This is a new build. The prefabricated basement will be delivered to me in 2 weeks.

Chaos, what is planned?

Vicky Pedia schrieb:

Chaos, what is planned?

None at all. It is a utility basement.

For office use, no question about it, proper insulation (10cm (4 inches) Linitherm) and then underfloor heating.