The House of books is very close to the old city center, you can just walk everywhere. The apartment is nice and very clean, the terrace on top of the roof is very nice to relax.
Elena took good care of us and welcomed us personally. When we got a ticket for parking in front of the house (which is for residents as we presume), she took care of everything and handled the fine so we didn't pay anything in the end.
We had a nice time, would recommend it to everyone.