Daring is very kind and has given us all the informations and answers that we asked in few time.
I suggest this host and the location.
The location is 4th floor, with private bathroom and a lot of space. Just a small think, the bed is very soft.
The position is not far from union square and L line.
The last day allow us to leave the bags all day and avoid us to find a storage....
So, I suggest with no doubts!! Perfect host!