We asked in advance if we could leave our bags there in the morning of the check-in and the host said no problem. On the day, he didn't answer our messages until 1h before check-in which made things a bit worrying as we weren't sure if we were being stood up completely.. as we didn't even have the flat number. The room was totally fine, apart from there was no bedding .. so we slept on what I assume was communal blanket and sofa pillows.
The host was super nice on the day (even made us coffee), and we asked if we could again leave our bags in the corner until the evening when we had our bus. The host agreed and even said we can keep the keys for easiness.
When we returned for our bags he started demanding we pay him for an extra day as we left our bags there "too long" - even though we warned we would be back in the evening at 8pm. We quickly took our bags and left immediately because it was quite a delirious almost intimidating environment. Quite weird. He had towels though and allowed us to use the kitchen, and the area feels super safe.