We did not meet Marius but communication was very good.
Check in was easy, we were able to drop our bags off early being let in by his housekeeper.
The apartment is well situated close to London Bridge.
The transport links to both underground and buses are close by. There are good local shops plus the wonderful Borough Market which is a foodie's dream come true.
The apartment is very well equipped, clean and comfortable.
We recommend it as an excellent place to stay in central London.