Internet, router, plan signal

I have bought a mid-terrace house with a ground floor of 60m2 (kitchen, living room, hallway, WC, technical room) and on the first floor 3 bedrooms.

The house is to be set up as a kind of "Medieval shared flat," meaning me and someone else who are not partners live together. Like students, just the adult version.

The telecommunications come into the house next to the front door on the ground floor. The router will also be placed there. Is that enough for internet on both floors for 2 people? If not, how do I "extend" the signal to the first floor?

Unfortunately, I don't know anything about technology. Sorry if I asked a very stupid question.

You will have to "extend" it, of course, so that it works stable. Go to the store you trust, because you are not stupid, and ask about it. Ask for repeaters.

ah, thank you. That already answers part of my ignorance. It remains wireless through the repeater. I don’t have to install the LAN boxes in every room? Is one better than the other?

The house is supposed to be set up as a kind of "medieval flat-share," so me and someone else who aren't partners live together. Like students, but in the adult version.

Two bachelors alone in the house. I don't know your hobbies or internet habits, but I would say the internet is significantly more important for you than for the average person. In the worst case, you want to stream 4k movies simultaneously and at the same time play online computer or console games with low latency. For that, you need cables, and I wouldn't make any compromises there.

Ah, thank you. That already answers part of my ignorance. It remains wireless through the repeater. I don't have to install LAN sockets in every room, do I?
Is one better than the other?

Cable is ALWAYS better.
If it absolutely has to be wireless, then I would at least run a cable to the second floor to connect another access point there.

With a mid-terrace house, always keep in mind that there are WLAN networks on the left and right that can interfere with yours. This can already negatively affect your WLAN.

If it should work more smoothly, then WLAN access points that are connected to the router via LAN cable. The position next to the front door is also rather suboptimal. Is it an existing house or can you still make changes?

At the top of the stairs [see ] I would probably find an access point (or possibly just a repeater here) the most practical. Don’t you have an installation shaft more or less in the middle? I can’t quite remember if you had once marked on the floor plan where you live and where the cohouser does. Further recent discussions on this topic can be found among others at: The repeater / access point market is not really my thing – so I can’t reliably assess the relevance of whether the installation location (in the Netherlands, if I remember correctly) should be pointed out here.

Cable is ALWAYS better.

I agree: wireless "belongs" to nomadic users, laziness to install cables is rather a poor reason for it.