Thanks for all the replies!
The monks' website mentions the guesthouse, I was just curious if anyone had any first-hand experience with staying there. The website says:
"[The guesthouse] consists of four cells completely equiped with ensuite (sink, toilet and shower), basic furnishings, but comofortable for relaxing, reading and working. Men and women are both welcome. The only condition required is to respect the atmosphere of silence in the monastery, its order and tranquility of the guests and monks. We ask you not to smoke. Whoever wishes to take part in spiritual exercises should advise us in advance so that it can be organized.
Our guests have the freedom to organize the length of their stay. They have a key to the monastery with which they can come in and out. The only thing we ask is that you respect the monastery´s closing time after Compline, mealtimes.
They can attend all liturgical celebrations which take place in the church. And once more, they eat together with the monks in the refectory, a place where silence is requested."
Sounds like a neat communitiy.