I came across a house recently that had an indoor spa as one of it's features. Most of these tend to be the portable boxy type ones (with lids) however this one was in-built, much like an inground pool, into the floor of the rumpus room. It had a half wall surrounding it constructed from glass bricks. Very tastefully done, if you like hot tubs The question of safety sprang to mind, though, when I noticed another party inspecting the place, with young children in tow. There was no doorway to the room (open plan) that housed the spa, and because of it's size and obvious function, the spa was full of water. Quite a safety issue to overcome, especially if you had visitors over with young children. I actually found it a detriment to the property, as I'm not a fan of spas anyway - especially given the increased electricity bills and indoor chlorinated aroma! But I did see it as a shame to fill it in and re-do the flooring around it (expensive job)- what other alternatives would you suggest?