To start with I never received email with instructions and entry code. Secondly it was far from clear from hotels.com portal that there is no reception welcome staff. Thirdly, the hotel entrance was very hard to find - it is not on the same sreet as the address suggests, instead another unmanned hotel has its entry door (also covert) where you would expect "hotel" Alva to be.
After 1.5 hours on the phone with hotels.com helpdesk the issues were eventually resolved.
The (unserviced) room was very nice, clean and relatively quiet.By contrast, the hotel itself as well as surrounding area is industrial. There are no restaurants or bars for dinner, save a couple of other hotels.
It is possible but relatively expensive to take public transport to/from the city centre, every 20/30 minutes. Walking (50 min) unfortunately not attractive.