Sorry you have had these issues, glad the Owner got the Heating sorted at least you are warm again.
Flooding in a room that’s not used, us not knowing if you know the backstory, I would borrow a wet vac from the neighbour, as much of an annoyance that it is.
IDK if this is newish to the Owner and they having to wait until Summer time to have the repairs done to stop the flooding? if it’s an old house the saying is “old house, deep pockets” we have sat many a farm house, thatched cottages, old listed houses (charming when all going well) not great when a problem springs up.
We have had Owners when at hand over asking “any quirky things with the house, you a sticky door lock? a Window that if you open it, it will never close again, window that leak etc” some home owners are just used to it and will say oh “there’s a heap of old towels in the cupboard in the laundry room or under the stairs” for that Window that the rain just comes through when it rains, or the door when it rains the rain just leaks through and then it swells and you have to really slam it or not use it and use another door, or the laundry room taps that drip, the drip never stops, the step that you can’t step on that stair or you will go through it, or just use the other staircase even though the guest bedrooms/bathrooms are at the end of the house where the “ skip that step” stair case is, because they rarely use them so it just is.
You need to mention it in person to the Owner that maybe they get a Wet vac themselves if this is going to be an going problem and on your review.
We lived in a rental and the hot water system screamed like someone was being murdered, we had numerous visits from heating/boiler engineers who said “it’s all working fine, it’s just noisy” because it was a rental we were stuck with it. We used to put Music on when having a Shower or Bath so you drowned out the noise, my Parents came over from Aus, Mum had her Shower she came running downstairs “the water is broken” Silly us had forgotten all about it, we had been living with it for years, people get used their quirky homes, we had Mail arrive from Australia a few months after we moved out the new Tennant’s rang me to tell me Mail had arrived, they asked me when I went around to collect it about the noise, I told them the House problems that we had had, the boiler blew up and the whole laundry room had to be repainted because the smoke damaged the ceiling, the newly painted hallway ceiling but not the walls was because the hot water service broke and it needed a new tank but not before leaking and damaging the downstairs hallway ceiling all things the letting agent said nothing of, they wondered, 7years later they are still in that house and the still living with that noise. (it was a really nice house, in a really nice location so we put up with it, obs the same reason they are)
Anyways, sorry you are having to wet vat up the room, fingers crossed no more heavy rain and clean up and you can get on and enjoy the rest of the sit.
Happy sitting