The location is in SF center, only a couple of blocks from Union Square and 4 blocks from BART Powell Station - very easy walks.
The place is an old renovated hotel as are many in the city and is kept very clean.
The facilities are basic. I stayed in a room and used the shared bathroom and toilet. There was no issue for me about having to wait in line to use the toilet or bathroom.
I found the surrounding neighborhood fairly safe; I only ventured towards Union Square.
The staff was very friendly and easily accommodated my late check-in.
The best part is the value. I have researched, and stayed in, many hotels in the same area and have found Luz Hotel to be the best deal. I was only in SF for a two-day business meeting, but this is still a great value for vacationers staying longer.