Can leave my luggage in the hotel and walk around the city till my check in hour?

Yes you can. They also put a sticker on your luggage and put them in special room. They are very kind.

Yes

Yes, you can. They have a room special for that

Yes you can. They keep your luggage in a room

I think yes...

Yes! There is room in which you can keep you luggage till your check in. And it's free pf charge