Its late so I wont comment on everything right now (tomorrow)
I've gave it try and at first it seemed as a nice small map, but i as ran around the map i found things that i didn't like..
There's a well in the map, when trying to climb up the ladder it wont let me... try to make the ladder abit higher. Textures within house looks abit off, might be the scaling! The door sizes need some work on aswell, maybe add a frame around your doors. The tunnel has a lot of 'hidden' doors, or maybe secret, but try to make the tunnel abit more wider, i've got claustrophobic down there
I'll have a better look at it tomorrow when i get back from my studies, should be around lunch, european time...
Is this your first map btw!?