<human>: My boyfriend of a year and a half has a friend visiting right now (we live in Berlin). The friend is traveling through Europe right now on a very low budget so she cannot afford accommodation. She's a nice person and we all had dinner when she got into town last night. 

BF offered up his flat for her to stay in (we don't live together) and said it was fine if she just wanted to sleep in his bedroom (on a cot, not in his bed). I assume that is where she slept last night, since I did not say anything when he brought that up (in front of both of us). 

It is probably worth noting that he has a very small flat so there isn't really a great other option for a place for her to sleep. She could stay on his couch but he does not have enough room to set up the cot anywhere but his bedroom. I don't know that I'm comfortable with this but I don't want to bring it up if it's an insecure way to feel and I should just get over it.

Could you distill the essence of the text into 1-3 sentences?
<bot>: BF has a female friend from out of town staying in his bedroom and I don't know if I should bring up that it makes me uncomfortable or if my discomfort is unreasonable.