It takes about 15mins walk from Nankai Namba station to the hotel. I made a mistakes and went to Hotel11 Kuromon 1 which is quite nearby to Kuromon 2. Luckily, another guest helped us to and realised that there are 2 Hotel11 apartments in the same area.
It's just repainted the apartment corridors but there isn't any unpleasant smell.
The room is absolutely spacious in Osaka or Asian standard and the room rate is considered as value for money.
The only thing to comment is no staff at the lobby management office and you have to either email or call direct phone line if any checkin issue.