Lena is an excellent host. This is my first trip to Prague, on top of which I was going to continue further East to go mountain biking. Lenka allowed me to keep my bike in the room (its my prized possession, second only to my dog). She also held the bike case for the week I was in eastern Czech. All of that made the two parts (Prague sightseeing & mountain biking) of my vacation a lot more feasible. It would have been significantly more difficult.
Lenka also met with me and made sure all was in order and that I was feeling comfortable and relaxed. Such a friendly atmosphere. It feels like having your own place in Prague. Home away from home. There's also the café downstairs... perfect for settling in (drop off the bags and immediately run downstairs, order a beer and relax. Ahhhhhhhh. :-)