how can I change/edit informations about my house

Sommerhus i Marielyst m/Spa og sauna - tæt på by og strand - 9135268

I should like to be able to edit a few informations on my house, such as:

- numbers of bedrooms in my house - from 1 bedroom to 3 bedrooms (the house have 3 bedrooms)

- Wifi - I have free wifi

- Washing machine - there are a washing machine and a dryer

and perhaps other things, when I find the page to correct such things.

Could you pls. help me

Kind regards,