Wooden house 1.5 floors with 8x5m floor area - How much should it cost?

Hello,
we have bought a small plot of land by a lake. Only a wooden house is allowed to be built here, with a floor area of 5.5 x 8 m (external dimensions) and 1.5 floors. All connections and sewer, etc. are already on the property.

We want the following:
- Wooden frame construction with larch wood pre-weathered.
- Pellet stove for heating (IR heating panels for safety when absent)
- Energy Saving Ordinance does not need to be complied with (except external roof insulation)

What would such a turnkey house approximately cost (with foundation slab, roof, doors, etc., so only furniture needs to be put in and finished...)?

Thanks

I estimate around 200,000 euros.

... how many people are supposed to live there? 5.5x8 m external dimensions result in about 35 sqm usable interior space minus interior walls plus attic.

It is a weekend or holiday house for a maximum of 4-5 people.

The net living area is approximately 63 sqm.

Not a primary residence but only for weekends or vacation(s).

Where are the 63 sqm supposed to come from?

Also, it reads as if you have an offer and now just want blind numbers, but you already have your own plan of the house. That would be "Guess with Rosenthal" .. it would be better to post your information here and ask how others perceive the price.