When we were working out the spaces for our house, hubby made sure we included a prayer room. We decided to construct it on the second floor, where the bedrooms & the family area are found.
This is our small sanctuary.
Since it was a rather small space, I deemed it was better off without a door. A beaded curtain was put up instead just to define the space. No claustrophobic feeling for anyone who might be inside, since a relaxed setting is more conducive to meditation.
We had a ledge installed to serve as an altar.
To discourage clutter, I have a storage box for our prayer books & rosaries. I got this from the Gift Market section of M!2.
We had 2 low benches custom-built. I just added 4 throw pillows, a pair for each bench. I also bought a bamboo mat for kneeling or sitting on the floor while praying.
To let in natural light & ventilation, a 2-panel awning-type high window or clerestory was provided. A crucifix hangs just above the altar.
For the last 4 years, this room has become our refuge. It is a space worth considering when you're planning your house. Take it from us - we feel so blessed for having it in our home. =)