Be aware, that it's a single room as a part of an apartment. The apartment is shared with the uncle and ant of Martin and Martin himself.
That - however - did not generate any issues, and even though we are a family of 2 adults and 2 kids, we managed to get along fine with the family.
However, as a family with kids we are getting up at 7.00 in the morning, and at several occasions the family of Martin told us to be a bit more quiet in the morning, as Martin slept. This is not acceptable, as we did not rent the place with any limitations on bedtime.
As tourists in a big city we wanted to plan day by day for where to go, how to get tickets, opening hours etc. For this we needed internet. Also our kids needed "time off" the touristic aspects, and watching whatever youtube-vids once in a while was needed. However, even though the apartment is stated as with WiFi, the internet only worked the first day.
We told Martin about the issues several times, and he stated, that he tried to fix it (the internet in the apartment is running with a standalone SIM card managed 4G router, which needs to be topped up with euros once in a while), nothing really happened. In our opinion he never made it work, so we ended up paying for some roaming packages from our own operator instead, though this didn't help the kids. This is not acceptable.
The apartment is situated only 5 mins of walk from the tram, which takes you to the city center in 20 mins. This is really nice, and the area of the apartment is in general quiet.
In general Martin and the family are nice people, and if you are a couple without kids or young people, who just needs some beds to crash, it's a great place for a great price.
But if you are a family with the needs that comes along, we wouldn't recommend the place.