We traveled at November. Temperature at flat was ~19° and humidity quite high. The floors are stone, so they feel slightly chilly. House is from 19th century, so of course it does not have ventilation system. We did not mind that especially now with the energy crisis going on. We neither did not ask for more heating, so maybe it would be possible to have more heating. Also we assumed that in advance and took slippers and knit with us.
Exellent place. Great location. We recommend.