Nothing to say about the host, he was helpful and the check-in and check-out were fairly easy.
I'd stay no longer than a few days though, mainly for the fact that you can't use the kitchen and the problem with the towels, even though he gave us 2, there was no way to dry them somewhere, we did use the heating in the bathroom, but that got turned off the day after we turned it on, so we only managed to dry out towel once even though we washed 3 times in that period.
Other than that, if you're fine with the cold, you can go there any time of the year, fortunately he provided 2 blankets to sleep in, if not for those, I'd have frozen to death. Otherwise, I'd suggest you go during the summer (we went there in march).
Place is not in city center but there's a bus station that gets you to city center in 20 mins and it's even till late night, so it won't be a problem at all.
So to wrap it up, stay a few days and during the summer if you want.