I am not sure why you would care how much your guest “crowded the space.” Besides a yoga mat and a bike, the items were basically clothes and toiletries; I was staying for a month! Maybe you should avail the tenant to one of the locked closets in the room if you are concerned about this? I would have liked a closet.
As for using the space as an office: I would not consider the need to make some early-morning calls on (SENSITIVE CONTENTS HIDDEN) or answering emails at night/weekends to be using the space as an office. Rather, this is pretty much what’s expected of the typical worker these days. (You are lucky if this doesn’t apply to you.) You were aware of that I was working, not a tourist.
My best advice for you is to communicate openly with your guests- as I tried to do (three times) about the futon cover (did those count towards my 27 messages?), rather than hiding behind text messages repeatedly or acerbic reviews after the fact. In-person conversations or a quick phone call go along way even though it’s 2015. More accurate communication about the source of the problems with the Internet before the half-way point of my stay would have helped. The original explanation was merely that the router needed to be reset a lot. Simply putting the router in a spot where I could reset it myself solved my access problem as I conveyed to you.
It’s great that you have now communicated the expectations about use of hotplates in the written description of the rental so guests are aware beforehand. In my experience, these items are routinely used in Air BnB rooms like the one you rent.
“Each time I entered the apartment during her stay…” What? You asked for and I gave you permission to enter the room once during the stay. What an invasion of privacy. I encourage you to include your expectations to enter the space at your will and unbeknownst to the guest to the listing as well.
Your room was left in a similar manner as all of the other places that I stayed. None of them had complaints about this, and 2 of 4 remarked how clean the space was. Perhaps, you should inspect your place with the guest before departure to convey what you want cleaned and how. You could also review damages. This is much better than sending a text 5 days after check out about supposed damages.