The 1 nighter stayed in his room apart from me welcoming him by opening the door. The 3 nighter helped himself to morning coffee in my kitchen whilst I was still in bed. We had a couple of short conversations from opposite sides of the dining room = 2+ meters. The bathroom is shared.
Interestingly, UK rules for self-isolating following contact with an infected person say you only need to isolate if within 2 metres for 15 mins....... So on that basis, low risk, even if someone was infected.
I'm not saying 'Do as I do' @Lori2240 , just saying that in 2 December hostings, I completely forgot about masks, and so did the guests! (Many summer guests DID arrive masked, till I told them no need.)